occlude (v.)youdaoicibaDictYouDict[occlude 词源字典]
1590s, from Latin occludere (past participle occlusus) "shut up, close up," from ob "against, up" (see ob-) + claudere "to shut, close" (see close (v.)). Of teeth, 1888 (also see occlusion). Related: Occluded; occluding.[occlude etymology, occlude origin, 英语词源]