amygdaloid
A variety of trap or basaltic rock, containing small cavities, occupied, wholly or in…A variety of trap or basaltic rock, containing small cavities, occupied, wholly or in part, by nodules or geodes of different minerals, especially agates, quartz, calcite, and the zeolites. When the imbedded minerals are detached or removed by decomposition, it is porous, like lava.
Meaning
1 senses(countable, uncountable)A variety of trap or basaltic rock, containing small cavities, occupied, wholly or in part, by nodules or geodes of different minerals, especially agates, quartz, calcite, and the zeolites. When the imbedded minerals are detached or removed by decomposition, it is porous, like lava.
- volcanic rock in which rounded cavities formed by expanding gas have subsequently become filled with mineral deposits
Origin
From Ancient Greek ἀμυγδάλη (amugdálē, “almond”) + -oid.From Ancient Greek ἀμυγδάλη (amugdálē, “almond”) + -oid.
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Forms
plural: amygdaloids| Singular | amygdaloid |
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| Plural | amygdaloids |
regular
Synonyms
1 synonymsWord family
6 related wordsLessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable