new moon

Concise Bible Dictionary:

See MOON.

Strong’s Dictionary of Greek Words:

Greek:
νουμηνία
Transliteration:
noumenia
Phonic:
noo-may-nee’-ah
Meaning:
feminine of a compound of 3501 and 3376 (as noun by implication, of 2250); the festival of new moon
KJV Usage:
new moon