n.
Pronunciation: pri- ' z ə m(p)-sh ə n
Function: noun
Etymology: Middle English presumpcioun, from Anglo-French presumption, from Late Latin & Latin; Late Latin praesumption-, praesumptio presumptuous attitude, from Latin, assumption, from praesumere
Date: 13th century
1 : presumptuous attitude or conduct : AUDACITY
2 a : an attitude or belief dictated by probability : ASSUMPTION b : the ground, reason, or evidence lending probability to a belief
3 : a legal inference as to the existence or truth of a fact not certainly known that is drawn from the known or proved existence of some other fact