Amygdaloid

[ә'migdәlɔid]

解释:

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

手打:鲁迪--From WordNet

解释:

(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.

(a.) Alt. of Amygdaloidal

编辑:兰尼

解释:

n. a variety of basaltic rock containing almond-shaped nodules of other minerals as quartz felspar.—adj. Amygdaloi′dal.

校对:斯宾塞