ichidan verb, transitive verb
take advantage of; seize an opportunity
Used when someone exploits a situation, often with a nuance of opportunism. Can also mean to act in accordance with or be swayed by something, as in 感情に乗じる.
彼は混乱に乗じて逃げ出した。
He took advantage of the confusion and ran away.
相手の隙に乗じ
Attack by taking advantage of an opening in the opponent's defense.
ichidan verb, transitive verb
Mathematical term for multiplication. Less common in everyday speech than 掛ける.
3に5を乗じると15になる。
Multiply 3 by 5 and you get 15.