tat

verb (1)

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\ ˈtat

tatted; tatting

Definition of tat

(Entry 1 of 5)

intransitive verb

: to work at tatting

transitive verb

: to make by tatting

tat

noun (1)

\ ˈtat

variants: or Tat

Definition of tat (Entry 2 of 5)

: a small protein produced by a lentivirus (such 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

tat

noun (2)

\ ˈtat

Definition of tat (Entry 3 of 5)

chiefly US slang

: a tattoo on a person's skin He pulls up his shirt to show us his tats.— Dave Eggers

tat

verb (2)

tatted; tatting

Definition of tat (Entry 4 of 5)

transitive verb

1 chiefly US slang : to mark or color the skin with tattoos : tattoo The benefit of getting tatted at a festival is that you have more than 200 artists from which to choose.— Kellie Hwang —often used with up… say you're not a gang member, yet hang out with gang members, get tatted up with gang symbols or nicknames …— Kimberly Edds

2 chiefly US slang : to mark (something) with something like a tattoo Cargo trains, all rusted and tatted with graffiti, occasionally pass on the neighboring track.— Kara Starzyk —often used with upMy passport got tatted up pretty good this year. I hit a dozen countries on five continents, as well as eight states. — The Chicago Sun-Times

TAT

abbreviation

Definition of TAT (Entry 5 of 5)

thematic apperception test

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Last Updated

20 Jan 2021

Cite this Entry

“Tat.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tat. Accessed 21 Jan. 2021.

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More Definitions for tat

tat

noun, often capitalized

\ ˈtat

Medical Definition of tat

(Entry 1 of 2)

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

TAT

abbreviation

Medical Definition of TAT (Entry 2 of 2)

thematic apperception test