amygdaloid Meaning, Definition & Usage

  1. noun volcanic rock in which rounded cavities formed by expanding gas have subsequently become filled with mineral deposits
  2. adjective satellite shaped like an almond
    amygdaliform; almond-shaped; amygdaloidal.

WordNet

A*myg"da*loid noun
Etymology
Gr. almond + -oid: cf. F. amygdaloïde.
Definitions
  1. (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.
A*myg"da*loid, A*myg`da*loid"al adjective (Also<
  • Amygdaloid
  • Amygdaloidal
)
Definitions
  1. Almond-shaped.
  2. Pertaining to, or having the nature of, the rock amygdaloid.

Webster 1913