Search Result for "quartz crystal":
Wordnet 3.0

NOUN (1)

1. a thin plate or small rod of quartz cut along certain lines and ground so that it can produce an electric signal at a constant frequency; used in crystal oscillators; 



WordNet (r) 3.0 (2006):

quartz crystal
    n 1: a thin plate or small rod of quartz cut along certain lines
         and ground so that it can produce an electric signal at a
         constant frequency; used in crystal oscillators