Tetra meaning

tĕtrə
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Any of a number of brightly colored, tropical American, characin fishes, often kept in aquariums.
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Any of numerous small colorful tropical freshwater fishes chiefly of the family Characidae, such as the neon tetra, often kept in home aquariums.
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Four.

Tetrode.

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Containing four of a specified kind of atom, radical, or group.

Tetrachloride.

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Four.

Tetrachord.

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Any of several species of small South American freshwater fish of the family Characidae, popular in home aquaria.
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Forming compound words having the sense of "˜four'.
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Origin of tetra

  • Gr tetra- < base of tettares, tessares, four < IE base *kwetwer- > four

    From Webster's New World College Dictionary, 5th Edition

  • Short for New Latin Tetragōnopterīnī group name Late Latin tetragōnum tetragon tetragon Greek pteron wing

    From American Heritage Dictionary of the English Language, 5th Edition

  • Greek kwetwer- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From combining form of Ancient Greek τέτταρες (tettares), τέσσαρες (tessares, “four").

    From Wiktionary

  • From Translingual Tetragonopterus, an obsolete genus that included these fish.

    From Wiktionary