tat

¹tat

verb \ˈtat\

tat·tedtat·ting

Definition of TAT

intransitive verb

: to work at tatting

transitive verb

: to make by tatting

Origin of TAT

back-formation from tatting

First Known Use: 1858

Other Handicraft Terms

biscuit, darn, tambour, wrought

Rhymes with TAT

bat, batt, blat, brat, cat, Cat, chat, chert, drat, fat, flat, frat, gat, gnat, hat, mat, Matt, matte, pat, phat, plait, plat, Pratt, rat, sat, scat, scatt, skat, slat, spat, splat, sprat, stat, that, vat

²tat

noun \ˈtat\

Definition of TAT

: a small protein produced by a lentivirus (as HIV) that greatly increases the rate of viral transcription and replication and enhances the susceptibility of T cells to infection; also : the viral gene that codes for the tat protein

Origin of TAT

trans-activating transcriptional regulation

First Known Use: 1985

Other Biochemistry Terms

bile, biodegradable, capsaicin, keratin, metabolism

³tat

noun \ˈtat\

Definition of TAT

: tattoo

— tat verb

Origin of TAT

by shortening

First Known Use: 1987

TAT

abbreviation

Definition of TAT

thematic apperception test

Other Psychology Terms

fetish, hypochondria, intelligence, mania, narcissism, neurosis, pathological, psychosis, schadenfreude, subliminal

tat

noun , often capitalized \ˈtat\   (Medical Dictionary)

Medical Definition of TAT

1

: a small protein produced by a lentivirus (as HIV) within infected cells that greatly increases the rate of viral transcription and replication and that is also secreted extracellularly where it plays a role in increasing viral replication in newly infected cells and in enhancing the susceptibility of T cells to infection—called also tat protein

2

: the viral gene that codes for the tat protein