Library / English Dictionary

PLAGIOCLASE

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

Any of a series of triclinic feldspars that form rocks

Synonyms:

oligoclase; plagioclase

Classified under:

Nouns denoting substances

Hypernyms ("plagioclase" is a kind of...):

feldspar; felspar (any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium)

Hyponyms (each of the following is a kind of "plagioclase"):

albite; white feldspar (a widely distributed feldspar that forms rocks)

anorthite (rare plagioclastic feldspar occurring in many igneous rocks)

Holonyms ("plagioclase" is a substance of...):

dacite (a grey volcanic rock containing plagioclase and quartz and other crystalline minerals)

basalt (the commonest type of solidified lava; a dense dark grey fine-grained igneous rock that is composed chiefly of plagioclase feldspar and pyroxene)

Derivation:

plagioclastic (of or relating to plagioclase)

Credits