The Collaborative International Dictionary
Unition
Unition \U*ni"tion\, n. [LL. unitio, from L. unire. See
Unite,v. t.]
The act of uniting, or the state of being united; junction.
[Obs.]
--Wiseman.
Wiktionary
unition
n. (context obsolete English) union; the act of uniting, or the state of being united.