Added 10 October 2026 kilocalorie noun Categories: Describing WordsObscure Words noun ! Definition from Wiktionary (CC BY-SA). More about kilocalorie at Wordnik → Where our words come from → A non-SI unit of energy equal to 1,000 calories (small calories), used (now rare) in chemistry or physics; equal to 1 calorie as used in nutrition. Symbol kcal. Origin From kilo- + calorie. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: frigoriecaloriekilo-joulekilokelvinmegacaloriekilojoulecaloric Back to today's word