b
1 Americanabbreviation
noun
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the second letter of the English alphabet, a consonant.
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any spoken sound represented by the letter B or b, as in bid, bauble, or daubed.
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something having the shape of a B .
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a written or printed representation of the letter B or b.
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a device, as a printer's type, for reproducing the letter B or b.
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the second in order or in a series.
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(sometimes lowercase) (in some grading systems) a grade or mark, as in school or college, indicating the quality of a student's work as good or better than average.
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(sometimes lowercase) (in some school systems) a symbol designating the second semester of a school year.
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Physiology. a major blood group usually enabling a person whose blood is of this type to donate blood to persons of type B or AB and to receive blood from persons of type O or B.
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Music.
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the seventh tone in the scale of C major or the second tone in the relative minor scale, A minor.
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a string, key, or pipe tuned to this tone.
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a written or printed note representing this tone.
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(in the fixed system of solmization) the seventh tone of the scale of C major, called ti.
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the tonality having B as the tonic note.
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(sometimes lowercase) the medieval Roman numeral for 300.
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Chemistry. boron.
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a proportional shoe width size, narrower than C and wider than A.
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a proportional brassiere cup size, smaller than C and larger than A.
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Physics. magnetic induction.
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Electricity. susceptance.
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a designation for a motion picture made on a low budget and meant as the secondary part of a double feature.
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a quality rating for a corporate or municipal bond, lower than BB and higher than CCC.
abbreviation
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bachelor.
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bale.
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Baseball. base; baseman.
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bass.
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basso.
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bay.
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billion.
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blend of; blended.
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book.
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born.
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breadth.
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brother.
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brotherhood.
abbreviation
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bachelor.
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bacillus.
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Baseball. base; baseman.
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bass.
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basso.
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bay.
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Bible.
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bolivar.
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boliviano.
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book.
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born.
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breadth.
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British.
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brother.
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brotherhood.
symbol
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music
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a note having a frequency of 493.88 hertz ( B above middle C ) or this value multiplied or divided by any power of 2; the seventh note of the scale of C major
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a key, string, or pipe producing this note
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the major or minor key having this note as its tonic
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the supporting or less important of two things
the B side of a record
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a human blood type of the ABO group, containing the B antigen
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(in Britain) a secondary road
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the number 11 in hexadecimal notation
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chem boron
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magnetic flux density
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chess bishop
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(on Brit pencils, signifying degree of softness of lead) black Compare H
B
2B
3B
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Also: b. physics bel
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physics baryon number
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balboa
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belga
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bolivar
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photog B-setting
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a person whose job is in middle management, or who holds an intermediate administrative or professional position
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( as modifier ) See also occupation groupings
a B worker
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abbreviation
noun
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the second letter and first consonant of the modern English alphabet
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a speech sound represented by this letter, usually a voiced bilabial stop, as in bell
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Also: beta. the second in a series, esp the second highest grade in an examination
abbreviation
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(on maps, etc) bay
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British
abbreviation
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born
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cricket bowled
abbreviation
symbol
Other Word Forms
Noun Inflected Forms
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
Astronomers estimate that the atmosphere of LHS 1140 b has survived for more than three billion years.
From Science Daily ● Jul. 21, 2026
The study, published July 16 in Science, describes observations of helium escaping from LHS 1140 b, a rocky exoplanet located about 48 light-years from Earth.
From Science Daily ● Jul. 21, 2026
The planet, called LHS 1140 b, is 48 light-years from Earth orbiting a red star much smaller and cooler than our Sun.
From BBC ● Jul. 17, 2026
The new research estimates that GJ 504 b is between 2.5 billion and 4 billion years old.
From Science Daily ● Jun. 28, 2026
More precisely, these ratios had to be written in the form a/b, where a and b were nice, neat counting numbers like 1, 2, or 47.
From "Zero: The Biography of a Dangerous Idea" by Charles Seife
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"His crime is, as I said, choosing a foolish plan A instead of a plan B."
From BBC ● Jul. 22, 2026
"I don't know how you do it. I believe in magic but I loved it," Mel B said when giving her verdict, which was a yes.
From BBC ● Jul. 21, 2026
Because her modified adjusted gross income also increased, she ended up paying higher Medicare Part B and Part D premiums, and a larger share of her Social Security benefits became taxable.
From MarketWatch ● Jul. 18, 2026
Mombasa B is in a fleet of tankers controlled by the dominant company in the cottage industry of shuttle shippers, South Korea’s Sinokor.
From The Wall Street Journal ● Jul. 14, 2026
After wiping the drool from Sabrina’s face, Mrs. B put the slobber monster down for a nap.
From "Sir Fig Newton and the Science of Persistence" by Sonja Thomas
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The B- rating is constrained by Argentina’s international liquidity, high inflation, and macroeconomic instability.
From The Wall Street Journal ● May 5, 2026
S&P Global assigned Strategy a B- issuer credit rating with stable outlook in October.
From Barron's ● Nov. 24, 2025
He hopes the division can improve from Peters’ grade of a B- to a higher level.
From Los Angeles Times ● Nov. 14, 2025
I am one of only 10,916 active donors in England who has CMV-free, B- blood.
From BBC ● Feb. 16, 2024
She holds my current grades by two fingers: D, C, B-, D, C-, C, A. No basketball team for me, because the A was in art, so my GPA is a whopping 1.7.
From "Speak" by Laurie Halse Anderson
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In 2018, the Moscow Zoo launched a Blakiston’s fish owl breeding program, which currently is made up of two B. b. blakistoni females, one in Moscow and another at the Sakhalin Island Zoo.
From National Geographic ● Feb. 5, 2021
“I drive Kansas interstates frequently, and I know that they are doing an excellent job, a. keeping the ditches mowed and b., keeping our roads clear and safe,” said Claeys.
From Washington Times ● Feb. 10, 2019
Using the interpretations from b. and c. explain why the Holling type I equation may not be realistic.
From Textbooks ● Mar. 30, 2016
As in part b., this function cannot be written using a formula involving basic algebraic operations only; therefore, this function is transcendental.
From Textbooks ● Mar. 30, 2016
The inscription turned out to be a date: September 3,32 b. c. , in today’s calendar.
From "1491" by Charles C. Mann
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Adoption of e-readers like the Kindle and Kobo didn’t replace physical books; and despite the shuttering of mass-market chains like Borders, Waldenbooks and B. Dalton, the last 30 years have seen a reading boom.
From Salon ● Jul. 23, 2026
The company had recently cut 1,400 jobs, and Lego Group Chief Executive Niels B. Christiansen said he had one aim: “to stabilize the business.”
From The Wall Street Journal ● Jul. 18, 2026
The national commission, originally created by President Lyndon B. Johnson, was reformed under President Richard Nixon.
From Los Angeles Times ● Jul. 1, 2026
Vitor B. de Souza is a medical student at the University of Pennsylvania Perelman School of Medicine.
From MarketWatch ● Jun. 21, 2026
That was a B. Which I figured I should’ve felt pretty happy about, because a B was better than a C or even a D, which was what I used to get on spelling tests.
From Absolutely Almost by Lisa Graff
To settle the transfer, the U.S. bank subtracts the funds from Bank A's balance and adds them to Bank B's.
From The Wall Street Journal ● Jun. 26, 2026
B’s on a report card are not allowed in his family.
From Los Angeles Times ● Apr. 29, 2026
Outfits worn by the Spice Girls, including Mel B's leopard-print catsuit, are on display as part of a "Cool Britannia" exhibition in London.
From BBC ● Apr. 16, 2026
“I mean, I got some B’s in math in school, so yeah, I’m aware of the math there,” he said, acknowledging the swing nature of his vote.
From Slate ● Mar. 18, 2026
I knew I needed to wait a bit before I shared Ida B’s Golden and Supremely Important Nugget of Wisdom.
From "Ida B" by Katherine Hannigan
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Summer is a season of Bs: beaches, barbecues, baseball—and blockbusters.
From The Wall Street Journal ● Jun. 6, 2026
Only eight banks got Bs, while the majority got Cs; 36 got Ds.
From MarketWatch ● Feb. 27, 2026
The Glacier Range Riders begin the 2024 season with a home game on May 21 against the Oakland Bs, which also play in the Pioneer League.
From Seattle Times ● Apr. 23, 2024
"There are Plan Bs and Plan Cs," President Macron said, adding, "We are preparing them in parallel, we will analyse this in real time."
From BBC ● Apr. 15, 2024
They go from low Bs to very low Cs before they figure out what is going on.
From "Speak" by Laurie Halse Anderson
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Yet Barnard b's mere existence hints at the presence of other exoplanets in that solar system, some of which may be more hospitable to life.
From Salon ● Oct. 4, 2024
After modelling the exoplanet and the star in the HAT-P-18 system, the iREx astronomers performed a meticulous dissection of HAT-P-18 b's atmospheric composition.
From Science Daily ● Jan. 9, 2024
The planet’s initial discovery and its photographic follow-up were only possible because of the decades-spanning Gaia-Hipparcos data, which allowed detection of HIP 99770 b’s long orbit.
From Scientific American ● Apr. 13, 2023
Johansen says AB Aurigae b’s position in one of the disk’s spiral arms could indicate either creation mechanism.
From Science Magazine ● Apr. 3, 2022
It was because she has trouble saying words sometimes, especially beginnings, like b’s and t’s and k’s.
From Absolutely Almost by Lisa Graff
“You are smart enough to think through some bs propaganda,” Brian wrote to A.J. on Facebook.
From New York Times ● Nov. 19, 2023
"This won't be the last failure of this nature so long as people are rewarded for pushing this bs," he said.
From Salon ● Mar. 13, 2023
“SAME tone deaf energy as this bs from the start of the pandemic,” said a different user.
From Los Angeles Times ● Feb. 24, 2022
Mark Morgioni The concept of tests is also bs.
From Slate ● Jan. 31, 2020
I is the embryonic condition. bs, Blood sinus.
From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 3 "Apollodorus" to "Aral" by Various
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.