[1855–60; ‹ NL, equiv. to ōvār(ium) ovary + -ītis-itis]This word is first recorded in the period 1855–60. Other words that entered Englishat around the same time include: keyword, kickoff, output, pipeline, superheat-itis is a suffix used in pathological terms that denote inflammation of an organ (bronchitis; gastritis; neuritis) and hence, in extended senses, nouns denoting abnormal states or conditions, excesses,tendencies, obsessions, etc. (telephonitis; baseballitis)