'Bivium' definitions:
Definition of '
Bivium
'
From:
GCIDE
Bivium \Biv"i*um\, n. [L., a place with two ways. See
Bivious
.] (Zool.) One side of an echinoderm, including a pair of ambulacra, in distinction from the opposite side (trivium), which includes three ambulacra. [1913 Webster]
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