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perthite
[
pur
-thahyt]
WORD ORIGIN
noun
Mineralogy
.
a variety of feldspar containing irregular bands of albite in microcline.
Origin of
perthite
1832;
named after
Perth,
Ontario, Canada; see
-ite
1
Related forms
per·thit·ic
[per-
thit
-ik]
/pərˈθɪt ɪk/
,
adjective
per·thit·i·cal·ly
,
adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019