AMYGDALOID

amygdaliform, almond-shaped, amygdaloid, amygdaloidal

(adjective) shaped like an almond

amygdaloid

(noun) volcanic rock in which rounded cavities formed by expanding gas have subsequently become filled with mineral deposits

Source: WordNet® 3.1

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Etymology

Adjective

amygdaloid (not comparable)

Shaped like an almond

(anatomy) Relating to the amygdala

Noun

amygdaloid (countable and uncountable, plural amygdaloids)

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.

Synonyms

• mandlestone

Source: Wiktionary

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A*myg"da*loid, n. Etym: [Gr. -oid: cf. F. amygdaloïde.] (Min.)

Definition: A variety of trap or basaltic rock, containing small cavities, occupied, wholly or in part, by nodules or geodes of different minerals, esp. agates, quartz, calcite, and the zeolites. When the imbedded minerals are detached or removed by decomposition, it is porous, like lava.

A*myg"da*loid, A*myg`da*loid"al, a.

1. Almond-shaped.

2. Pertaining to, or having the nature of, the rock amygdaloid.

Source: Webster’s Unabridged Dictionary 1913 Edition

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