chelate (adj.)youdaoicibaDictYouDict[chelate 词源字典]
"having pincer-like claws," 1826 as a term in zoology; 1920 in chemistry, from Modern Latin chela "claw" (from Greek khele "claw, talon, cloven hoof;" see chelicerae) + -ate (2). Related: Chelated; chelating; chelation.[chelate etymology, chelate origin, 英语词源]