What does tetra stand for?

Tetraploid - Genetics

Tetrachlormethan (SAUS)

Tetra Technologies, Inc. - Associated Press (SAG)

Terminal Tracking Telescope

Terminal Trajectory Telescope (IAA)

Terrestrial Trunked Radio - Communications

Tetracaine hydrochloride (SAUS)

Trans European Trunked Radio (SAUS)

Transeuropean Trunked Radio (SAUS)