[ 'pɒzɪt ]
■ verb ( ~s , ~ing , ~ed )
1》 put forward as fact or as a basis for argument.
↘( ~ something on ) base something on the truth of (a particular assumption).
2》 place.
■ noun Philosophy a statement which is made on the assumption that it will prove to be true.
Origin
C17: from L. ~- , ponere 'place'.