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A letter occurring in certain early forms of Greek and transliterated in English as w.

[Latin, from Greek : di-, two; see di-1 + gamma, gamma (because its shape resembles two gammas); see gamma.]


(Letters of the Alphabet (Foreign)) a letter of the Greek alphabet (Ϝ) that became obsolete before the classical period of the language. It represented a semivowel like English W and was used as a numeral in later stages of written Greek, and passed into the Roman alphabet as F
[C17: via Latin from Greek, from di-1 + gamma; from its shape, which suggests one gamma upon another]


(daɪˈgæm ə)

n., pl. -mas.
a letter of the early Greek alphabet that represented a sound similar to English w and fell into disuse before the classical period.
[1545–55; < Latin < Greek dígamma]
Mentioned in ?
References in classic literature ?
1) In diction, dialect and style it is obviously dependent upon Homer, and is therefore considerably later than the "Iliad" and "Odyssey": moreover, as we have seen, it is in revolt against the romantic school, already grown decadent, and while the digamma is still living, it is obviously growing weak, and is by no means uniformly effective.
psi]([alpha]) = [d[gamma]([alpha])/d[alpha]] is the digamma function.
where B(a, b) = [GAMMA](a) [GAMMA] (b)/ [GAMMA] (a + b) and [PSI](x)is the digamma function, the asymptotic expression of SOP at high MER can be written as
Perhaps as a means of gaining acceptance among his fraternity brothers in the Digamma (aka "The Fox Club"), he composed the notorious Bolo verses that reek of racism, misogyny, and embarrassingly juvenile attitudes toward sexuality.
Zubair, "Extended gamma and digamma functions," Fractional Calculus & Applied Analysis, vol.
where [psi] (*) denotes the digamma function, the derivative of the log of the gamma function.
For a long time it was believed that Foscolo had acquired the house, but in fact, the cottage (called Digamma Cottage, with a reference to an erudite essay composed in the meantime entitled Sul digamma eolico), never belonged to him.
Merkle, Convexity, Schur-convexity and bounds for the gamma function involving the digamma function, Rocky Mountain J.
L'harpax de Therapne ou le digamma d'Helene: 0:130(ovfic xapax-rfip cam*.
Digamma, "The Brilliant Young Man," Westminster Gazette (16 Jan 1904) 1-2, p.
where [psi](z) = [GAMMA]'(z)/[GAMMA][z] is the digamma function.
Then we establish some sharp inequalities for the digamma function xp, that is the logarithmic derivative of the gamma function,