An acid/base definition that suggests an Brønsted–Lowry acid is any molecule that can donate a proton, and a Brønsted–Lowry base is any molecule that accepts the proton. Protons can be referred to as H+ or "hydrogen ions," so if you see those terms used in a textbook they all mean the same thing. When a Brønsted–Lowry acid gives its proton away, it is "deprotonated" and can now accept a proton; now that it has become an acceptor, it is referred to as a conjugate base. The same rule applies to Brønsted–Lowry bases: once they gain a proton (are protonated), they are known as conjugate acids.
student: i'm a little confused with this functional group. the reading says that the carboxylic acid (COOH) group loses its proton, H, making the formula COO−. now that there's a space on the oxygen that's vacant, could the group accept a proton in the empty space? wouldn't that make the group a base?
teacher: yeah, acids turn into things known as conjugate bases when they lose hydrogen ions. the space where a proton used to be is now available for bonding, and the group or molecule becomes a proton acceptor/Brønsted–Lowry base
that's how you use the Bronsted-Lowry/Brønsted–Lowry Acid-Base Theory
teacher: yeah, acids turn into things known as conjugate bases when they lose hydrogen ions. the space where a proton used to be is now available for bonding, and the group or molecule becomes a proton acceptor/Brønsted–Lowry base
that's how you use the Bronsted-Lowry/Brønsted–Lowry Acid-Base Theory
by ilikesciencemorethanyoudo July 6, 2025
Get the Bronsted-Lowry/Brønsted–Lowry Acid-Base Theorymug. Refers to the act of bypassing second and third base, but instead proceeding directly from first to fourth base; i.e., having sex with a girl right away, without bothering to tediously wade through the whole hugging/kissing/touchy-feely foreplay-crap in between.
The simplest and most effective/successful fourth-base shortcut procedure, in two easy steps:
(1) Find a hot chick and offer her a free foot-massage (first base).
(2) When the cutie obligingly plops herself down and gives you her feet, take one foot in each hand and start rubbing them, but also gradually raise them up high till her legs are back over her head and her butt is lifted off the ground, allowing you to slip off whatever lower garment(s) she's wearing. If she'd made no objections by that time, then the rest is easy; just kick off your own lower garments and enjoy (fourth base).
(1) Find a hot chick and offer her a free foot-massage (first base).
(2) When the cutie obligingly plops herself down and gives you her feet, take one foot in each hand and start rubbing them, but also gradually raise them up high till her legs are back over her head and her butt is lifted off the ground, allowing you to slip off whatever lower garment(s) she's wearing. If she'd made no objections by that time, then the rest is easy; just kick off your own lower garments and enjoy (fourth base).
by QuacksO October 8, 2017
Get the fourth-base shortcutmug. The modern use of based, as in how people may refer to themselves online in a political context, originates from African American slang in the 2000s. After it became a meme in 2010, the left started to refer to themselves as Based King or Based Queen online. Today the word is even used by the right, although ironically.
You forgot to put your pronouns. How will anyone know whether to call you based king, based queen, or based monarch?
by Cyberocrat January 2, 2023
Get the Basedmug. by albanianjesus December 22, 2020
Get the Basedmug. 
Slam-dunking a basketball into someone's gaping asshole.
"Dude my girlfriend took me to twenty-fourth base last night, it was insane!"
"Well that explains the wheelchair."
"Well that explains the wheelchair."
by bigsexysciencelady October 30, 2020
Get the Twenty-Fourth Basemug. A word used to show approval of or agreement with a meme, video or other general post that is usually extremely sexist or misogynistic in nature. Particularly common in reddit comment sections.
Person A: *shows a meme*
Person B: *nods in approval* “Based.”
Another example:
Person A: “Dude, look at this based meme I made!”
Person B: “Damn bro, that’s so based.”
Person B: *nods in approval* “Based.”
Another example:
Person A: “Dude, look at this based meme I made!”
Person B: “Damn bro, that’s so based.”
by heIIo there March 31, 2022
Get the Basedmug.