Strong's G3561 · Greek

νεομηνία

noumenia

feminine of a compound of 3501 and 3376 (as noun by implication, of 2250); the festival of new moon

Scholarly Lexicons

Abbott-Smith Manual Greek Lexicon

 1 (KJV) νεομηνία (Att. contr., νουμ- , Rec.), -ας, ἡ ( νέος , μήν ), [in LXX chiefly for חֹדֶשׁ ;] new moon : of the Jewish festival, Col 2:16 .† 

G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain