TETRA
tetra
(noun) brightly colored tropical freshwater fishes
Source: WordNet® 3.1
Etymology
Noun
tetra (plural tetras)
Any of numerous species of small South American freshwater fish of the family Characidae, popular in home aquariums.
Anagrams
• Ratte, Treat, atter, ratte, tater, teart, treat
Source: Wiktionary
Tet"ra-. Etym: [Gr. Four.]
1. A combining form or prefix signifying four, as in tetrabasic,
tetrapetalous.
2. (Chem.)
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition