مثبت

mus̤bit (act. part. of اثبت 'to establish,' etc., iv of ثبت 'to remain fixed,' etc.), part. adj. Establishing, fixing; confirming, ratifying; affirmative; demonstrative;—s.m. One who, or that which, confirms, etc.:—mus̤bat (pass. part. of the same conj.), part. Established, etc. (=mus̤abbat, q.v.); affirmed;—(in Alg.) plus, the sign +.