πεντάμηνος

ον, ιά
A. five months old, Arist. HA 568a12 ; π. τέκνον, παιδία, five months' child(ren), ib.585a19, Men. Epit. 576.
2. consisting of five months, περίοδοι Plu. 2.933e ; ὁ π. (sc. χρόνος) Hp. Epid. 3.1.ιά.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project