What does Tetra mean?

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]

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tetra

noun

1: brightly colored tropical freshwater fishes

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