Wordnet 3.0
ADJECTIVE (1)
1. 
 having relatively few calories; 
- Example: "diet cola"- Example: "light (or lite) beer"- Example: "lite (or light) mayonnaise"- Example: "a low-cal diet"[syn: light, lite, low-cal, calorie-free]
WordNet (r) 3.0 (2006):
calorie-free
    adj 1: having relatively few calories; "diet cola"; "light (or
           lite) beer"; "lite (or light) mayonnaise"; "a low-cal
           diet" [syn: light, lite, low-cal, calorie-free]