- the distinctively treated portion of a column or pier below the shaft or shafts.
- the distinctively treated lowermost portion of any construction, as a monument, exterior wall, etc.
- the part of an organ nearest its point of attachment.
- the point of attachment.
- any of the four corners of the diamond, especially first, second, or third base.Compare home plate.
- a square canvas sack containing sawdust or some other light material, for marking first, second, or third base.
- a fortified or more or less protected area or place from which the operations of an army or an air force proceed.
- a supply installation for a large military force.
- the number that serves as a starting point for a logarithmic or other numerical system.
- a collection of subsets of a topological space having the property that every open set in the given topology can be written as the union of sets of the collection.
- a collection of neighborhoods of a point such that every neighborhood of the point contains one from the collection.
- a collection of sets of a given filter such that every set in the filter is contained in some set in the collection.
- a compound that reacts with an acid to form a salt, as ammonia, calcium hydroxide, or certain nitrogen-containing organic compounds.
- the hydroxide of a metal or of an electropositive element or group.
- a group or molecule that takes up or accepts protons.
- a molecule or ion containing an atom with a free pair of electrons that can be donated to an acid; an electron-pair donor.
- any of the purine and pyrimidine compounds found in nucleic acids: the purines adenine and guanine and the pyrimidines cytosine, thymine, and uracil.
- an electrode or terminal on a transistor other than the emitter or collector electrodes or terminals.
- the part of an incandescent lamp or electron tube that includes the terminals for making electrical connection to a circuit or power supply.
Idioms about base
- Baseball. not touching a base: The pitcher caught him off base and, after a quick throw, he was put out by the second baseman.
- Informal. badly mistaken: The police were way off base when they tried to accuse her of the theft.
Origin of base1
synonym study for base
Words nearby base
Other definitions for base (2 of 2)
- of humble origin or station.
- of small height.
- low in place, position, or degree: base servitude.
Origin of base2
synonym study for base
OTHER WORDS FROM basebasely, adverbbaseness, noun
How to use base in a sentence
It is based on the interaction between the sender and the receiver.Christian Puglisi Is Closing His Influential Copenhagen Restaurants. COVID Is Only Partly to Blame|Rafael Tonon|September 17, 2020|Eater
Our country is based on that, and I think it’s going to happen pretty quickly.Timeline: The 124 times Trump has downplayed the coronavirus threat|Aaron Blake, JM Rieger|September 17, 2020|Washington Post
Ever since, though, he had completed fewer passes than we’d expect based on the characteristics of the throws he attempted — until now.
Especially on the coronavirus, he is playing to his base above all else.Trump keeps dodging the crux of major issues — and that’s showing in his reelection prospects|Amber Phillips|September 16, 2020|Washington Post
She got 35 percent of the vote after spending less than $200,000, revealing that there was a base for left-wing politics in a state politically dominated by moderate suburbanites.
Paperback publishers distributed their titles in African-American neighborhoods because it expanded their market base.
If ISIS “came into a base and killed hundreds of troops, then people would ask a lot more questions.”Pentagon Doesn’t Know How Many People It’s Killed in the ISIS War|Nancy A. Youssef|January 7, 2015|DAILY BEAST
Huckabee will also need to establish a reliable fundraising base, something that up until now has proved to be elusive.
Both are considered marginal figures in the House GOP caucus and have no real base of support for their respective bids.
In the weeks following the Sept. 9, car bombing at the Iranian base, Iran raided a village in the Pakistani district of Chagai.The Dangerous Drug-Funded Secret War Between Iran and Pakistan|Umar Farooq|December 29, 2014|DAILY BEAST
The upper part of the stem is usually unbranched, but whorls of branches occur towards the base.How to Know the Ferns|S. Leonard Bastin
It is a vile world because it is an under-educated world, unreasonable, suspicious, base and ferocious.The Salvaging Of Civilisation|H. G. (Herbert George) Wells
In ordinary work, however, it is safer to base the distinction upon size than upon structure.A Manual of Clinical Diagnosis|James Campbell Todd
If he married that base-born creature Dorothy, no respectable person would ever enter the house.The World Before Them|Susanna Moodie
There might be in the school boys base enough to charge that he lacked spirit in his attitude of armed neutrality.The Soldier of the Valley|Nelson Lloyd
British Dictionary definitions for base (1 of 2)
- a centre of operations, organization, or supplythe climbers made a base at 8000 feet
- (as modifier)base camp
- the part of an organ nearest to its point of attachment
- the point of attachment of an organ or part
- the lowest division of a building or structure
- the lower part of a column or pier
- the number of distinct single-digit numbers in a counting system, and so the number represented as 10 in a place-value systemthe binary system has two digits, 0 and 1, and 10 to base two represents 2 See place-value
- (of a logarithm or exponential) the number whose powers are expressedsince 1000 = 10³, the logarithm of 1000 to base 10 is 3
- (of a mathematical structure) a substructure from which the given system can be generated
- the initial instance from which a generalization is proven by mathematical induction
- a root or stem
- See base component
Word Origin for base
British Dictionary definitions for base (2 of 2)
- (of land tenure) held by villein or other ignoble service
- holding land by villein or other ignoble service
Derived forms of basebasely, adverbbaseness, noun
Word Origin for base
Medical definitions for base
Scientific definitions for base
- Any of a class of compounds that form hydroxyl ions (OH) when dissolved in water, and whose aqueous solutions react with acids to form salts. Bases turn red litmus paper blue and have a pH greater than 7. Their aqueous solutions have a bitter taste. Compare acid.
- See nitrogen base.
- The side or face of a geometric figure to which an altitude is or is thought to be drawn. The base can be, but is not always, the bottom part of the figure.
- The number that is raised to various powers to generate the principal counting units of a number system. The base of the decimal system, for example, is 10.
- The number that is raised to a particular power in a given mathematical expression. In the expression an, a is the base.
Cultural definitions for base
Any of a number of bitter-tasting, caustic materials. Technically, a material that produces negative ions in solution. A base is the opposite of an acid and has a pH of 7 to 14. A given amount of a base added to the same amount of an acid neutralizes the acid; water and a salt are produced. Alkalis are bases; ammonia is a common base.
Other Idioms and Phrases with base
see get to first base; off base; touch base.