transparency (n.)youdaoicibaDictYouDict[transparency 词源字典]
1610s, "condition of being transparent," from Medieval Latin transparentia, from transparentem (see transparent). Meaning "that which is transparent" is from 1590s; of pictures, prints, etc., from 1785; in photography from 1866. Related: Transparence.[transparency etymology, transparency origin, 英语词源]