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amygdaloid 杏仁巖; 扁桃樣的 杏仁岩; 扁桃樣的 amygdaloid adj 1: shaped like an almond [synonym: {almond-shaped}, {amygdaliform}, {amygdaloid}, {amygdaloidal}] n 1: volcanic rock in which rounded cavities formed by expanding gas have subsequently become filled with mineral deposits Amygdaloid \A*myg"da*loid\, n. [Gr. ? almond -oid: cf. F.
amygdalo["i]de.] (Min.) 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. [1913 Webster] Amygdaloid Amygdaloid \A*myg"da*loid\, Amygdaloidal \A*myg`da*loid"al\, a. 1. Almond-shaped. [1913 Webster] 2. Pertaining to, or having the nature of, the rock amygdaloid. [1913 Webster]
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