Word origin
[1350–1400; ME ‹ LL
reclūsiōn- (s. of
reclūsiō) a shutting off, equiv. to L
reclūs(
us)
recluse +
-iōn- -ion]This word is first recorded in the period 1350–1400. Other words that entered Englishat around the same time include: absolute, flash, index, negative, register-ion is a suffix, appearing in words of Latin origin, denoting action or condition, usedin Latin and in English to form nouns from stems of Latin adjectives (communion; union), verbs (legion; opinion), and esp. past participles (allusion; creation; fusion; notion; torsion)