phi
Americannoun
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the 21st letter of the Greek alphabet (Φ, φ).
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the consonant sound represented by this letter.
noun
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.
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If phi mesons can add to the strong force field, their cousins should, too—and J/psi mesons’ spin polarizations should be similarly impacted by the resulting fluctuations.
From Scientific American ● Feb. 2, 2023
Alpha, beta, upsilon, phi / Tuition here is too damn high!
From Washington Times ● Dec. 26, 2019
Having seen the alpha and omega of the series, I'm eager to see the gamma, delta, epsilon and phi, or whichever intermediate Greek letters you want to represent those four other episodes.
From Los Angeles Times ● Feb. 13, 2019
In modern Greek, phi sounds like “f,” but it is usually transliterated from ancient Greek as “ph.”
From The New Yorker ● Jan. 7, 2019
It likewise appears that the Romans were for a long period unacquainted with the use of aspirates, and were destitute of the phi and chi sounds of the Greek alphabet.
From History of Roman Literature from its Earliest Period to the Augustan Age. Volume I by Dunlop, John
Literally full of sigmas, phis, omegas and other symbols.
From Washington Times ● Apr. 7, 2020
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.