BTB

Bromothymol blue is a chemical that turns green or yellow when exposed to high levels of carbon dioxide. It’s chemical composition is C27H28Br2O5S

“We used BTB in class today to measure the release of CO2 in burning ethanol”

by Woofle_124 May 5, 2023

BTB

Black tall and beautiful

I'm looking to date a BTB lady

by Doniarose July 10, 2017

btb

by-the-book

She a btb person.

by Roro38 August 10, 2020

BTB

Big Time, Bitch
Getting famous, doing something worthy of fame, etc.

Joe: "I'm going BTB!"
Mike: "Uh, yeah sure."

by killinitBTB August 4, 2008

BTB

Big titty bitches.

When you meet her at the club you want to bury your face in them big titties, you know?

Damn dude, did you see that BTB I was trying to holler at last night? She was fine as fuck!

by DalehLlama June 4, 2018