noun, noun or participle which takes 'suru', intransitive verb
fainting and collapsing; falling unconscious
Describes losing consciousness and falling down; often used in medical or dramatic contexts.
彼は暑さで昏倒した。
He fainted and collapsed from the heat.
駅のホームで昏倒する人を見かけた。
I saw someone faint and collapse on the station platform.
Compound of 昏 (dark, faint) and 倒 (fall, collapse). The exact historical derivation is uncertain, but the kanji combination directly conveys the meaning of fainting and collapsing.