Definition of assignation noun from the Oxford Advanced Learner's Dictionary

 

assignation

 noun
noun
BrE BrE//ˌæsɪɡˈneɪʃn//
 
; NAmE NAmE//ˌæsɪɡˈneɪʃn//
 
(formal or humorous)
 
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a meeting, especially a secret one, often with a lover rumours about his secret assignations with his friend’s wife Word Origin late Middle English (in the senses ‘command, appointment to office, or allotment of revenue’): via Old French from Latin assignatio(n-), from the verb assignare, from ad- ‘to’ + signare ‘to sign’.
See the Oxford Advanced American Dictionary entry: assignation