— catoptric, catoptrical , adj. — catoptrically , adv.
/keuh top"triks/ , n. ( used with a sing. v. )
the branch of optics dealing with the formation of images by mirrors.
[ 1560-70; katoptrikós, equiv. to kátoptr ( on ) mirror ( kat- CAT- + op- see + -tron suffix of instruments) + -ikos -IC; see -ICS ]