The 21st letter of the Greek alphabet.
[Late Greek phī, from Greek phei.]
Dictionary:
phi (fī, fē) ![]() |
[Late Greek phī, from Greek phei.]
| 5min Related Video: phi |
| Asian Mythology: Phi |
The phi are spirits in Thailand and Laos who are known for their magical power and for their effect on everyday life. They resemble the nats (see Nats) of Burma. The phi are, above all, associated with the land and the soil and are a link between Buddhism (see Buddhism) and pre-Buddhist animism (see Animism). There is a hierarchy of phi and a cult associated with them (see Neak-tā).
| Veterinary Dictionary: phi |
The twenty-first letter of the Greek alphabet, φ; or φ;.
| Wikipedia: Phi (letter) |
| Look up Φ, φ, or phi in Wiktionary, the free dictionary. |
| Greek alphabet | |||
|---|---|---|---|
| Αα | Alpha | Νν | Nu |
| Ββ | Beta | Ξξ | Xi |
| Γγ | Gamma | Οο | Omicron |
| Δδ | Delta | Ππ | Pi |
| Εε | Epsilon | Ρρ | Rho |
| Ζζ | Zeta | Σσς | Sigma |
| Ηη | Eta | Ττ | Tau |
| Θθ | Theta | Υυ | Upsilon |
| Ιι | Iota | Φφ | Phi |
| Κκ | Kappa | Χχ | Chi |
| Λλ | Lambda | Ψψ | Psi |
| Μμ | Mu | Ωω | Omega |
| Obsolete letters | |||
| Digamma | Qoppa | ||
| San | Sampi | ||
| Other characters | |||
| Stigma | Sho | ||
| Heta | |||
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| Greek diacritics | |||
Phi (uppercase Φ, lowercase φ or math symbol ϕ), pronounced [ˈfi] in modern Greek and /ˈfaɪ/ or sometimes /ˈfiː/ in English,[1] is the 21st letter of the Greek alphabet. In modern Greek, it represents [f], a voiceless labiodental fricative. In Ancient Greek it represented [pʰ], an aspirated voiceless bilabial plosive (from which English ultimately inherits the spelling "ph" in words derived from Greek). In the system of Greek numerals it has a value of 500 (φʹ) or 500,000 (͵φ). The Cyrillic letter Ef (Ф, ф) arose from phi. In economics, this Greek symbol is usually an additive term.[clarification needed]
Contents |
The lower-case letter
(or often its variant,
) is often used to represent the following:
in mathematics, art, and architecture.The upper-case letter Φ is used as a symbol for:
The diameter symbol in engineering, ⌀, is often incorrectly referred to as "phi". This symbol is used to indicate the diameter of a circular section, for example "⌀14", means the diameter of the circle is 14 units.
In Unicode, there are multiple forms of the phi letter:
| Character | Name | Correct appearance | Your browser | Usage |
|---|---|---|---|---|
| U+03A6 | GREEK CAPITAL LETTER PHI | ![]() |
Φ | used in Greek texts |
| U+03C6 | GREEK SMALL LETTER PHI | or ![]() |
φ | used in Greek texts |
| U+03D5 | GREEK PHI SYMBOL | ![]() |
ϕ | used in mathematical and technical contexts[2] |
| U+0278 | LATIN SMALL LETTER PHI | ![]() |
ɸ | used in IPA to symbolise a voiceless bilabial fricative |
In some older fonts that are not yet compatible with Unicode 3.0 from 1998, the U+03D5 GREEK PHI SYMBOL might be represented by the "loopy"
symbol instead.[2] This is no longer a correct representation. The U+03C6 GREEK SMALL LETTER PHI may be presented as either the "stroked"
glyph, but preferably as the "loopy"
glyph.[2]
In HTML/XHTML, the upper and lower case phi character entity references are Φ (Φ) and φ (φ) respectively.
In LaTeX, the math symbols are \Phi (
), \phi (
), and \varphi (
).
This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)
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Copyrights:
![]() | Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved. Read more | |
![]() | Asian Mythology. A Dictionary of Asian Mythology. Copyright © 2001, 2002 by David Leeming. All rights reserved. Read more | |
![]() | Veterinary Dictionary. Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved. Read more | |
![]() | Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Phi (letter)". Read more |
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