positive的词源

英文词源

positive (adj.)

early 14c., originally a legal term meaning "formally laid down," from Old French positif (13c.) and directly from Latin positivus "settled by agreement, positive" (opposed to naturalis "natural"), from positus, past participle of ponere "put, place" (see position (n.)).

Sense of "absolute" is from mid-15c. Meaning in philosophy of "dealing only with facts" is from 1590s. Sense broadened to "expressed without qualification" (1590s), then "confident in opinion" (1660s); mathematical use is from 1704; in electricity, 1755. Psychological sense of "concentrating on what is constructive and good" is recorded from 1916.

positive (n.)

1520s, from positive (adj.).

中文词源

positive：确信的，有把握的；积极的，肯定的；正极的，阳极的；十足的，完全的 

词根词缀： -posit-放置 + -ive形容词词尾

该词的英语词源请访问趣词词源英文版：positive 词源，positive 含义。

positive：乐观的，积极的，实证的，阳性的，正极的

来自position,放置，位置，-ive,形容词后缀。即放好的，有位置的，原用于法律术语解决的，后引申诸多正面词义。