'Chondrule' definitions:

Definition of 'chondrule'

(from WordNet)
noun
Small granule (of e.g. chrysolite) found in some meteoric rocks

Definition of 'Chondrule'

From: GCIDE
  • Chondrule \Chon"drule\, n. [Dim. from Gr. ? a grain (of wheat or spelt), cartilage.] (Min.) A peculiar rounded granule of some mineral, usually enstatite or chrysolite, found imbedded more or less abundantly in the mass of many meteoric stones, which are hence called chondrites. [1913 Webster]