/ ˌɪmpəˈzɪʃn; NAmE / noun
1.
[ U ] the act of introducing sth such as a new law or rule, or a new tax :
the imposition of martial law
the imposition of tax on domestic fuel
2.
[ C ] an unfair or unreasonable thing that sb expects or asks you to do :
I'd like to stay if it's not too much of an imposition.
••
WORD ORIGIN
late Middle English : from Latin impositio(n-) , from the verb imponere inflict, deceive (from in- in, upon + ponere put), but influenced by impositus inflicted and Old French poser to place.