Tetra-

2 definitions found

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

  Tetra- \Tet"ra-\ [Gr. te`tra-, from te`sares, te`ttares, four.
     See {Four}.]
     1. A combining form or prefix signifying four, as in
        tetrabasic, tetrapetalous.
        [1913 Webster]
  


     2. (Chem.) A combining form (also used adjectively) denoting
        four proportional or combining parts of the substance or
        ingredient denoted by the term to which it is prefixed, as
        in tetra-chloride, tetroxide.
        [1913 Webster]

From WordNet (r) 2.0 [wn]:

  tetra
       n : brightly colored tropical freshwater fishes