a member of the epidote group, a silicate of calcium, cerium, aluminum, and iron, occurring chiefly in brown-to-black masses or prismatic crystals.
a rare black or brown mineral consisting of the hydrated silicate of calcium, aluminium, iron, cerium, lanthanum, and other rare earth minerals. It occurs in granites and other igneous rocks. Formula: (Ca,Ce,La,Y)2(Al,Fe,Be,Mn,Mg)3(SiO4)3(OH)


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  • Allantiasis

    allantiasis allantiasis al·lan·ti·a·sis (āl’ən-tī’ə-sĭs) n. Poisoning due to the ingestion of sausages, usually the result of consuming sausages containing the toxins of Clostridium botulium. Also called sausage poisoning. Historical Examples This may take place with other kinds of flesh, and is known as botulism, or allantiasis. A Guide to the Study of Fishes, Volume 1 […]

  • Allanto-

    allanto- allanto- or allant- pref. Sausage-shaped: allantoid.

  • Allantochorion

    allantochorion allantochorion al·lan·to·cho·ri·on (ə-lān’tō-kôr’ē-ŏn’) n. The extraembryonic membrane formed by the fusion of the allantois and the chorion.

  • Allantoic

    of or relating to the . Historical Examples It was for a long time held that the Marsupials differed from all other mammals in having no allantoic placenta. The Cambridge Natural History, Vol X., Mammalia Frank Evers Beddard As the allantois increases in size and importance, the allantoic vessels are correspondingly developed. The Works of […]

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