What does 有無 mean?
有無 is a Japanese noun meaning “yes or no, presence or absence” in English. It can also be translated as “consent or refusal” depending on context. It is written as 有無 in kanji, うむ in hiragana, and umu in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
排卵の有無を調べる方法はありますか？
Is there some way to check for ovulation?