Search Result for "ozone layer":
Wordnet 3.0

NOUN (1)

1. a layer in the stratosphere (at approximately 20 miles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun;
[syn: ozone layer, ozonosphere]


WordNet (r) 3.0 (2006):

ozone layer n 1: a layer in the stratosphere (at approximately 20 miles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun [syn: ozone layer, ozonosphere]