Secondary
来自Big Physics
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late Middle English: from Latin secundarius ‘of the second quality or class’, from secundus (see second1).
wiktionary
From Middle English secundarie, from Latin secundārius(“of the second class or quality”), from secundus (whence the English second) + -ārius (whence the English suffix -ary); compare the French secondaire, the Italian secondario, the Occitan secundari, the Portuguese secundario, and the Spanish secundario.
etymonline
secondary (adj.)
late 14c., from Latin secundarius "pertaining to the second class, inferior," from secundus (see second (adj.)). Of colors, from 1831; of education, from 1809. Of sex characteristics from 1780. Opposed to primary or principal. Related: Secondarily.
