Noah Webster's New International Dictionary of the English Language

1. (n.) Cessation for a time; an intervening period of time; a recess; a temporary pause; as, an intermission of ten minutes.

2. (n.) The act or the state of intermitting; the state of being neglected or disused; disuse; discontinuance.

3. (n.) The temporary cessation or subsidence of a fever; the space of time between the paroxysms of a disease. Intermission is an entire cessation, as distinguished from remission, or abatement of fever.

4. (n.) Intervention; interposition.