positive Look up positive at Dictionary.com
c.1300, a legal term meaning "formally laid down," from O.Fr. positif (13c.), from L. positivus "settled by arbitrary agreement, positive" (opposed to naturalis "natural"), from positus, pp. of ponere "put, place" (see position). Sense broadened to "expressed without qualification" (1598), then "confident in opinion" (1665); mathematical use is from 1704; in electricity, 1755. Psychological sense of "concentrating on what is constructive and good" is recorded from 1916. Positivism (1847) is the philosophy of Auguste Comte, who published "Philosophie positive" in 1830.