Polaroid (n.)

1811, "develop polarization in," in optics, from French polariser, coined by French physicist Étienne-Louis Malus (1775-1812) as a term in optics, from Modern Latin polaris "polar" (see polar). Transferred sense of "to accentuate a division in a group or system" is recorded from 1949 in Arthur Koestler. Related: Polarized; polarizing.

word-forming element meaning "like, like that of, thing like a ______," from Latinized form of Greek -oeidēs (three syllables), from eidos "form," related to idein "to see," eidenai "to know;" literally "to see" (from PIE *weid-es-, from root *weid- "to see"). The -o- is connective or a stem vowel from the previous element. Often implying an incomplete or imperfect resemblance to the thing indicated.