Webster’s Revised Unabridged Dictionary · 1913 Interpunction In′ter·punc′tion (·pŭn̲k′shŭn), n. [L. interpunctio, fr. interpungere, interppunctum, to interpoint. See Inter-, and Point.] The insertion of points between words or sentences; punctuation. ‹ Interpubic Interradial ›