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geological period

 - 1 dictionary result
GeoView, Inc.
A Full Service Geophysical Company- Sinkholes, Rebar, Utilities, USTs
www.geoviewinc.com
The Geophysical Directory
Recognized worldwide as the leading source for geophysical information
www.geophysicaldirectory.com
geological period

noun
a unit of geological time during which a system of rocks formed; "ganoid fishes swarmed during the earlier geological periods" [syn: period] 
WordNet® 3.0, © 2006 by Princeton University.
Cite This Source
GeoView, Inc.
A Full Service Geophysical Company- Sinkholes, Rebar, Utilities, USTs
www.geoviewinc.com
The Geophysical Directory
Recognized worldwide as the leading source for geophysical information
www.geophysicaldirectory.com
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