a suffix occurring in words of Latin origin, used to form abstract nouns from verbs or stems not identical with verbs, whether as expressing action ( revolution; commendation ), or a state ( contrition; starvation ), or associated meanings ( relation; temptation ).
Also, -ation, -cion, -ion, -sion, -xion .
[ -tion- (s. of -tio ), equiv. to -t ( us ) ptp. suffix + -ion- -ION ]