[t_ˈɛ_t_ɹ_ə], [tˈɛtɹə], [tˈɛtɹə]

Definitions of tetra:

  1.   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. – Newage Dictionary DB
  2.   A prefix to words formed from Greek roots, meaning four. – A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
  3.   brightly colored tropical freshwater fishes – Wordnet Dictionary DB
  4.   A common prefix in scientific and technical terms, signifying " four"; fourfold; four times. – Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
  5.   Combining forms. – The Concise Standard Dictionary of the English Language. By James Champlin Fernald. Published 1919.

Rhymes for tetra: