Search Result for "geological_period":
Wordnet 3.0

NOUN (1)

1. a unit of geological time during which a system of rocks formed;
- Example: "ganoid fishes swarmed during the earlier geological periods"
[syn: period, geological period]



WordNet (r) 3.0 (2006):

geological period
    n 1: a unit of geological time during which a system of rocks
         formed; "ganoid fishes swarmed during the earlier
         geological periods" [syn: period, geological period]