Berylloid

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Berylloid \Ber"yl*loid\, n. [Beryl + -oid.] (Crystallog.)
     A solid consisting of a double twelve-sided pyramid; -- so
     called because the planes of this form occur on crystals of
     beryl.
     [1913 Webster] Besaile
     Besaiel