TERT is an acronym for TElomerase Reverse Transcriptase, a protein subgroup. Telomerases are RNA-dependent polymerases. However, despite their similarities to other RNA-dependent polymerases, telomerases are part of a distinct subgroup of proteins because they are so similar to each other even when they come from diverse organisms.

An abbreviation for "tertiary". Referring to a particular arrangement of elements within a chemical molecule.