Infectious
来自Big Physics
Safin（讨论 | 贡献）2022年4月27日 (三) 10:45的版本 （建立内容为“Category:etymology == google == [https://www.google.com.hk/search?q=infectious+etymology&newwindow=1&hl=en ref] late Middle English: from late Latin infectio…”的新页面）
late Middle English: from late Latin infectio(n- ), from Latin inficere ‘dip in, taint’ (see infect).
etymonline
infectious (adj.)
"catching, having the quality of spreading from person to person, communicable by infection," 1540s of diseases, 1610s of emotions, actions, etc.; see infection + -ous. Earlier in the same sense were infectuous (late 15c.), infective (late 14c.). Related: Infectiously; infectiousness.
