ἀρσενικόν

Etymology 1
Of origin (compare 🇨🇬) under the strong influence of, from , ultimately from. See for more cognates.

Noun

 * 1)  orpiment, yellow sulfide of arsenic
 * 2) arsenic (chemical element 33)

Usage notes
Only the meaning "orpiment, arsenic sulfide" is attested in classical sources; the later shift to "arsenic metal" is found in the period of late Koine Greek to early Byzantine Greek, when begins referring to both realgar and orpiment (red and yellow arsenic sulfides).