Meaning & Definition of word "Tetra"

Tetra

/ˈtɛtrə/

noun:

  • 1. A prefix meaning four.
    • Example: The tetrahedron is a polyhedron with four faces.
  • 2. Any of a genus of small freshwater fish from Central and South America, popular in aquariums.
    • Example: Neon tetras are known for their vibrant colors and are a favorite among aquarists.
  • 3. A term used in chemistry to denote a compound containing four equivalent parts.
    • Example: Tetraethyllead was once used as an additive in gasoline.

adjective:

  • 1. Denoting a molecule containing four of a specified type of atom.
    • Example: The tetra-amine complex has four nitrogen atoms coordinated to a central metal.
  • 2. Relating to a four-sided figure or structure.
    • Example: The tetra structure of the crystal was discovered during the analysis.

Etymology

From Greek 'tetra', meaning 'four'.

Common Phrases and Expressions

tetra pack:

A type of container for liquids, usually made from paperboard.

tetrahedron:

A solid shape with four triangular faces.

Related Words

tetrachloride:

A chemical compound containing four chlorine atoms.

tetrameter:

A line of verse consisting of four metrical feet.

Slang Meanings of tetra

Meaning: Referring to something that comes in fours.

Example Sentence: That group of friends is a total tetra.

Meaning: Used to describe a four-part harmony in music.

Example Sentence: The band played a tetra arrangement that sounded amazing.