Search Result for "optical crown":
Wordnet 3.0

NOUN (1)

1. optical glass of low dispersion and low refractive index;
[syn: optical crown, crown glass, optical crown glass]



WordNet (r) 3.0 (2006):

optical crown
    n 1: optical glass of low dispersion and low refractive index
         [syn: optical crown, crown glass, optical crown
         glass]