"assignation" in the noun sense
1. assignation, tryst
a secret rendezvous (especially between lovers)
2. allotment, apportionment, apportioning, allocation, parceling, parcelling, assignation
the act of distributing by allotting or apportioning distribution according to a plan
"the apportionment of seats in the House of Representatives is based on the relative population of each state"
Source: WordNet® (An amazing lexical database of English)
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