mirror image; reflection in a mirror
General term for an image reflected in a mirror or any mirrored surface; also used figuratively for something that closely resembles another.
The mirror image of the mountain reflected on the lake surface is beautiful.
mirror image (math); inverse (of a point)
In mathematics, refers to the mirror image of a point or figure across a line or plane; also used for the inverse of a point with respect to a circle or sphere.
His behavior is like a mirror image of his father's.
Find the mirror image of point P with respect to line l.
enantiomer
Compound of 鏡 (mirror) and 像 (image). The exact historical derivation is uncertain, but the word is a straightforward Sino-Japanese formation.