Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A small gas bubble in igneous, especially volcanic, rock filled with secondary minerals such as zeolite, calcite, or quartz.
from The Century Dictionary.
- noun One of the crystalline nodules found in amygdaloid (which see).
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun geology A rounded mass of
secondary mineral found involcanic rock
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
[Latin amygdala, almond (from its shape); see amygdala + (nod)ule.]
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Examples
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