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amygdaloid

ADJECTIVE
  1. shaped like an almond
NOUN
  1. volcanic rock in which rounded cavities formed by expanding gas have subsequently become filled with mineral deposits

How To Use amygdaloid In A Sentence

  • The basis of these lower lavas is rather wacke than basalt; when it is spongy, it resembles the amygdaloids* of Frankfort-on-the-Main. Travels to the Equinoctial Regions of America
  • She listens as to a fairy tale, and then I tell her of the stellar crystals concealed in the rough crust of the amygdaloid. Lippincott's Magazine of Popular Literature and Science Volume 12, No. 31, October, 1873
  • Its spores are vinaceous pink to purple brown or chocolate in the mass; they are fusiform-amygdaloid and show a certain amount of compression.
  • Amygdaloid nuclei and the hypothalamic structures are known to have intimate functional relationships.
  • Like the chlorastrolites, they result from the weathering of the amygdaloid rock, in which they occur as small nodules, and in the same manner are sold by jewelers in the cities bordering on Lake Scientific American Supplement, No. 810, July 11, 1891
  • THE whinstone of Scotland is also the same with the toadstone of Derbyshire, which is of the amygdaloides species; it is also the same with the ragstone of the south of Staffordshire, which is a simple whinstone, or perfect trap. Theory of the Earth~ Part 3 (historical)
  • These minerals occur in amygdaloidal cavities and in nodules in intermediate composition volcanic rocks of the Conejos Formation.
  • The Fountain of Saint Vulcan, anti-blepharous and amygdaloidal, was charged with such potent minerals that a single spoonful produced a diarrhoea more distressing to witness than cholera. South Wind
  • The native-copper deposits can be further divided into fissure veins, and blanket-type lode deposits that occur in amygdaloidal lava flow tops and sedimentary conglomerate beds.
  • The summit of Machacha is composed of a dark igneous rock, apparently a sort of amygdaloidal trap, with white and greenish calcareous crystals scattered through it. Impressions of South Africa
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