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ligand substitution 

The act of replacing a ligand in a complex ion. This results in a change of colour of the complex ionic solution.
Rasta: What does ligand substitution do?
Me: Ligand substitution results in a different coloured solution!
ligand substitution by TheWizoid November 13, 2016

A "Greg Scott" Substitution 

Whilst playing Fifa online, pretending to make a substitution then quitting due to being one or more goals behind.
I was beating him 1-0 with 5 minutes left to go and he made "A "Greg Scott" Substitution"

substitution 

5 foot Jen is paying for her college through substitution.
substitution by Lori-Ann January 29, 2008

pillow substitution 

The act of switching pillow faces when a pillow becomes too warm due to absorption of the sleeper's body heat. This act can be accomplished by turning the pillow over, revealing the unused and cool side, or by getting a new pillow.
Last night I was pretty hot after doing my girlfriend. So my pillow got really hot and I couldn't fall asleep. That's when I pulled a pillow substitution. It was some tag-team, fresh action.
pillow substitution by juanch June 17, 2010

Tubstitutionalized 

When the dog won't come out of the tub, or runs to it whenever she's afraid or uncomfortable. Situations such as, but not limited to, rain, thunderstorms, high winds, unexpected loud noises, construction, garbage/recycling trucks, doors of port-a-pots closing sharply.
My dog hasn't come out of the tub for more than food or drink in days because it's raining, she must be tubstitutionalized.
Tubstitutionalized by AgilityDiva October 27, 2012

substitution property 

The idea that if a = b, then a may be replaced by b in any mathematical or algebraic expression.
If x = 3, then use 3 instead, its part of the substitution property.
substitution property by Charson Chick September 28, 2017
More from Urban Dictionary

pajama casual 

Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.
We have a Zoom meeting in a few minutes and I’ll probably go pajama casual.
pajama casual by jrod-knows March 31, 2020
Word of the Day on October 14, 2026

funflation 

The recent boom in consumer spending on entertainment and experiences with a high demand running up the cost of enjoying of those experiences.
I’m trying to go to this Taylor Swift concert but the funflation has made it so impossible for me to afford tickets.
funflation by Dfree523 November 17, 2023
Word of the Day on October 13, 2026
A US deep south term for an alligator. Usually used in the Cajun dialect.
Take the big pirogue, I saw a huge swamp dog out there earlier.
swamp dog by Crystal Ambrose May 22, 2006
Word of the Day on October 12, 2026

Throat Sweats 

The feeling and build up in your mouth/throat of saliva that sometimes accompanies nausea.
Oh man those burritos gave me the throat sweats, I hope I don’t have food poisoning.
Throat Sweats by TacoFings420 April 23, 2024
Word of the Day on October 11, 2026
Being ignored by someone when making a statement or asking a question. Also known as blanked and turfed.
Person 1: Did u watch ** last nite?
Person 2:......
Person 3: O no u got aired!
aired by Pietro February 9, 2005
Word of the Day on October 10, 2026

piddlefart

Instead of doing my homework, I decided to piddlefart around for two hours.
piddlefart by Rene April 25, 2005
Word of the Day on October 9, 2026
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