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tetracid
tetracyclic
tetracycline
tetrad
tetradactylous
tetradymite
tetraethyl lead
tetragon
tetragram
Tetragrammaton
tetrahedra
tetrahedrite
tetrahedron
tetrahydrocannabinol
tetrahydrothiophene
tetrahydroxy
tetraiodothyronine
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tetra

tet·ra [ téttrə ] (plural tet·ras or tet·ra)


noun 
Definition:
 
popular aquarium fish: a brightly-colored freshwater fish that lives in tropical regions and is kept as an aquarium fish. Family Characidae.

[Mid-20th century. Shortening of modern Latin Tetragonopterus< late Latin tetragonum (see tetragon) + Greek pteron "wing"]
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