Quick Definition
τεσσαρακονταετής, ές Adj forty years of age
Strong's Definition
of forty years of age
Derivation: from G5062 (τεσσαράκοντα) and G2094 (ἔτος);
KJV Usage: (+ full, of) forty years (old)
UBS Dictionary of the Greek New Testament
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
τεσσαρακονταετής (Τ Tr WH τεσσ ερ-, see τεσσαράκονta; LT accent -έτης, see ἑκατονταέτης); -ἐς, (τεσσαράκοντα, and ἔτος), of forty years, forty years old: Acts vii. 23; xiii. 18. (Hes. opp. 441.)
Mounce Concise Greek Dictionary
τεσσερακονταετής tesserakontaetēs 2x
forty years, Acts 7:23; 13:18*
Abbott-Smith Greek Lexicon
** τεσσερακονταετής
(T, -έτης; Rec. τεσσαρ-, v. supr.), -ές
of forty years, forty years old: Ac 7:23 13:18.†
Liddell-Scott-Jones — Greek-English Lexicon
τεσσαρακονταετής (tessarakontaetēs) — forty years. τεσσᾰρᾰκοντᾰ-ετής, ές, forty years old, [NT+8th c.BC+]:—Attic dialect feminine τεττᾰρᾰκοντᾰέτις, ιδος, [Refs 5th c.BC+]: masculine also τεσσᾰρᾰκοντούτης, [Refs 2nd c.AD+], (τεττ-) [Refs 2nd c.AD+]