Occlusion
/əˈkluː.ʒən/noun
The act of blocking or closing off something; in medicine, a closure or obstruction of a vessel or opening.
Did you know?It comes from Latin *occludere*, the same root behind *include* and *exclude*, where *-clud-* carries the ancient idea of shutting, locking, and sealing something away.
Etymological Timeline
Latin
Latin
occludere
“to shut up, close, block in”
Late Latin
Latin
occlusio
“a shutting up, closure”
Middle French
Old French
occlusion
“a closing up, obstruction”
14th–15th Century
English
occlusion
“the act of closing or blocking”
Modern English
English
occlusion
“a closure or obstruction, especially in medicine or dentistry”