Dictionary entry

Ictus

Webster's Dictionary 1913

‖Ic″tus (?), n. [L., fr. icere, ictum, to strike.] 1. (Pros.) The stress of voice laid upon accented syllable of a word. Cf. Arsis.

2. (Med.) A stroke or blow, as in a sunstroke, the sting of an insect, pulsation of an artery, etc.