noun
foreign substance; foreign body; contaminant
Used in medical, food-safety, and industrial contexts for unwanted material that does not belong.
食品に異物が混入していた。
A foreign substance was found in the food.
目に異物が入ったら、こすらずに洗い流してください。
If a foreign body gets into your eye, rinse it out without rubbing.
noun
strange object; unusual item
Refers to an object that is out of place or unexpected, not necessarily harmful.
海岸で異物を見つけた。
I found a strange object on the beach.
noun
Archaic literary use for a dead body; not used in modern everyday speech.
古い文献では、異物が死体を指すことがある。
In old texts, 異物 can refer to a corpse.