ONLINE ETYMOLOGY DICTIONARY:
toxicology Look up toxicology at Dictionary.com
1839, from French toxicologie (1812), from comb. form of Greek toxikon "arrow poison" (see toxic) + -logia (see -logy).
toxic (adj.) Look up toxic at Dictionary.com
1660s, from French toxique, from Late Latin toxicus "poisoned," from Latin toxicum "poison," from Greek toxikon (pharmakon) "(poison) for use on arrows," from toxikon, neuter of toxikos "pertaining to arrows or archery," and thus to a bow, from toxon "bow," probably from a Scythian word that also was borrowed into Latin as taxus "yew."
-logy Look up -logy at Dictionary.com
word-forming element meaning "a speaking, discourse, treatise, doctrine, theory, science," from Greek -logia (often via French -logie or Medieval Latin -logia), from root of legein "to speak;" thus, "the character or deportment of one who speaks or treats of (a certain subject);" see lecture (n.).
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