pheromone (n.)youdaoicibaDictYouDict[pheromone 词源字典]
"chemical released by an animal that causes a specific response when detected by another animal of the same species," but the exact definition is much debated; 1959, coined (by Karlson & Lüscher) from Greek pherein "to carry" (see infer) + ending as in hormone.[pheromone etymology, pheromone origin, 英语词源]