Tetra
//ˈtɛ.tɹə// noun
noun ·Moderate ·High school level
Definitions
Noun
- 1 Any of numerous species of small freshwater fish of the South American family Characidae and West African family Alestidae, popular in home aquariums.
"Among them were ancient relatives of the piranhas and those popular aquarium fish the tetras, along with garfish and freshwater coelacanths, known as mawsonids."
- 2 brightly colored tropical freshwater fishes wordnet
Synonyms
All synonymsExample
More examples"At present "consume all consumable resources" is assigned as the operational meaning of TETRA."
Etymology
From translingual Tetragonopterus, an obsolete genus that included these fish, ultimately from Ancient Greek τετράγωνος (tetrágōnos, “square, quadrilateral”) + πτερόν (pterón, “wing, fin”).
Related phrases
More for "tetra"
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.