What is ""تحدب رو به محاق"" in American English and how to say it?

Persian

تحدب رو به محاق

تحدب رو به محاق-waning gibbous.svg
American English

waning gibbous

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Example sentences

American EnglishThere's a full moon tonight.

How to say ""تحدب رو به محاق"" in American English and in 45 More languages.