noun. A volcanic rock containing many amygdules.

adjective. Shaped like an almond.

adjective. Of or relating to the amygdala.

adjective. Resembling a volcanic rock that contains many amygdules.

Almond-shaped.

Pertaining to or resembling amygdaloid.

Pertaining to the amygdalæ; tonsilar.

noun. The name given by geologists to igneous rocks or lavas of various composition, of which the most obvious external feature is that they have an amygdaloidal structure. (See amygdaloidal.)

adjective. Almond-shaped.

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

noun. 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.

adjective. Shaped like an almond.

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.

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

adjective. shaped like an almond