Added 9 October 2026 one-half noun Categories: Describing Words noun ! Definition from Wiktionary (CC BY-SA). More about one-half at Wordnik → Where our words come from → One of two equal parts (1/2, ½, 0.5). One-half lengthwise pad paper or one-half crosswise pad paper. Related Words: halfhalf-houraveragehalvinghalvedmiddlemidpointhalfwaycutoffmediapint1/2 Back to today's word