punctuate (v.) Look up punctuate at Dictionary.com
1630s, "to point out," from Medieval Latin punctuatus, past participle of punctuare, from Latin punctus, past participle of pungere "to prick, pierce" (from suffixed form of PIE root *peuk- "to prick").

Meaning in reference to text, "to have pauses or stops indicated," is from 1818, probably a back-formation from punctuation. Hence, "interrupted at intervals" (1833). Related: Punctuated; punctuating.