Definitions
from The Century Dictionary.
- Breaking obliquely; characterized by two different cleavages in directions oblique to one another, or pertaining to a mineral (as one of the triclinic feldspars) which has this property.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adjective of or relating to plagioclase
Etymologies
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Examples
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Both plagioclastic and orthoclastic aventurine occur at several localities in the United States.
Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 "Austria, Lower" to "Bacon" Various
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