台Taivo A Taiwan Mandarin dictionary

滿月

mǎnyuè

ㄇㄢˇ ㄩㄝˋ

Simplified 满月

1(of a baby) to reach one month of age
2(fig.) to reach the one-month mark since the start, launch or implementation of sth
3the full moon

Example

昨晚是滿月。

zuówǎn shì mǎnyuè

Last night there was a full moon.

Keep 滿月 and it comes back until you know it.