Definition of Amygdaloid

1. Noun. Volcanic rock in which rounded cavities formed by expanding gas have subsequently become filled with mineral deposits.

Generic synonyms: Volcanic Rock



2. Adjective. Shaped like an almond.
Exact synonyms: Almond-shaped, Amygdaliform, Amygdaloidal
Similar to: Rounded

Definition of Amygdaloid

1. n. 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.

2. a. Almond-shaped.

Definition of Amygdaloid

1. Adjective. Shaped like an almond. ¹

2. Noun. 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. ¹

¹ Source: wiktionary.com

Definition of Amygdaloid

1. [n -S]

Medical Definition of Amygdaloid

1. 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. Origin: Gr. Almond: cf. F. Amygdaloide. Source: Websters Dictionary (01 Mar 1998)

Amygdaloid Pictures

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Lexicographical Neighbors of Amygdaloid

amygdalase
amygdalate
amygdalates
amygdale
amygdales
amygdalic
amygdalic acid
amygdaliferous
amygdaliform
amygdalin
amygdalin beta(1-6)glucosidase
amygdaline
amygdalins
amygdalohippocampectomies
amygdalohippocampectomy
amygdaloid (current term)
amygdaloid body
amygdaloid complex
amygdaloid fossa
amygdaloid nucleus
amygdaloid tubercle
amygdaloidal
amygdaloids
amygdaloside
amygdalotomy
amygdals
amygdule
amygdules
amyl
amyl alcohol

Literary usage of Amygdaloid

Below you will find example usage of this term as found in modern and/or classical literature:

1. Contributions to the Geology of Eastern Massachusetts by William Otis Crosby (1880)
"I have not observed any isolated patches of conglomerate in the Newton Lower Falls and Brighton band of amygdaloid, save in the detached portion at the ..."

2. The Edinburgh Philosophical Journal by Royal Society of Edinburgh (1820)
"Wacke-amygdaloid, in which the cavities ^contain quartz. 3. Wacke-amygdaloid, with quartz, stilbite, and apophyllite. 4. Wacke-amygdaloid, with stilbite and ..."

3. Upper Peninsula, 1893-1897 by Michigan Geological Survey (1898)
"115-124; amygdaloid; green seam for the top 2 feet, then a marked ... 192-216; amygdaloid; green seam at top with red veins at bottom. 206?-222? ..."

4. A Manual of Elementary Geology: Or, The Ancient Changes of the Earth and Its by Charles Lyell (1857)
"... to which they gave different names, such as basalt, greenstone, porphyry, and amygdaloid. All these, which were recognized as belonging to one family, ..."

5. Early Western Travels, 1748-1846: A Series of Annotated Reprints of Some of by Reuben Gold Thwaites (1905)
"... Weather and Want of Provisions — Indications of an Approach towards Settlements — Inscribed Rock — Cervus Macrotis - Volcanic Origin of amygdaloid. ..."

6. Elements of Geology: A Text-book for Colleges and for the General Reader by Joseph Le Conte (1879)
"The rock called amygdaloid greatly resembles volcanic conglomerate, being apparently composed of almond-shaped pebbles in an igneous paste, but is formed in ..."

7. A Dictionary of Chemistry by Andrew Ure (1828)
"It occurs in secondary trap-rocks, as in basalt, greenstone, and amygdaloid. It is found near the village of Old Kilpatrick, Dumbartonshire ; in Ayrshire ..."

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