Definitions
from The Century Dictionary.
- noun In geology, the name given to the lower division of the Cretaceous system.
from the GNU version of the Collaborative International Dictionary of English.
- adjective (Geol.) Of or pertaining to the lower greensand.
- noun (Geol.) A term applied to the lowest deposits of the Cretaceous or chalk formation of Europe, being the lower greensand.
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