phi

noun

ˈfī How to pronounce phi (audio)
: the 21st letter of the Greek alphabet see Alphabet Table

Word History

Etymology

Middle Greek, from Greek phei

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of phi was in the 15th century

Phrases Containing phi

Dictionary Entries Near phi

phew

phi

phial

See More Nearby Entries 

Cite this Entry

“Phi.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/phi. Accessed 4 Oct. 2023.

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Kids Definition

phi

noun
ˈfī How to pronounce phi (audio)
: the 21st letter of the Greek alphabet
—Φ or φ

More from Merriam-Webster on phi

Britannica.com: Encyclopedia article about phi

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