Origin: ModL < L, a crumb, grain (< IE *(s)meik-, var. of base *(s)mei-, to smear, rub over > OE smitte, a smudge): sense infl. by micare, to shine, glitter < IE *meik-, to flicker, blink
See mica in American Heritage Dictionary 4
Origin: Latin mīca, grain (perhaps influenced by micāre, to flash).
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