Icon

google

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mid 16th century (in the sense ‘simile’): via Latin from Greek eikōn ‘likeness, image’. Current senses date from the mid 19th century onwards.

wiktionary

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From Latin īcōn, from Ancient Greek εἰκών(eikṓn, “likeness, image, portrait”). Eastern Orthodox Church sense is attested from 1833. Computing sense first recorded in 1982.

etymonline

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icon (n.)

also ikon, 1570s, "image, figure, picture," also "statue," from Late Latin icon, from Greek eikon "likeness, image, portrait; image in a mirror; a semblance, phantom image;" in philosophy, "an image in the mind," related to eikenai "be like, look like," which is of uncertain origin. The specific Eastern Church sense is attested from 1833 in English. Computing sense first recorded 1982.