suctorial (adj.)youdaoicibaDictYouDict[suctorial 词源字典]
1826, "pertaining to or adapted for sucking," from Modern Latin suctorius, from Latin suct-, past participle stem of sugere "to suck" (see sup (v.2)). Meaning "having a sucking organ" is from 1829.[suctorial etymology, suctorial origin, 英语词源]