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

Snubstitute 

To snubstitute is to non-consensually replace something that belongs to another person with something of lesser value.

Likewise, a snubstitute teacher is a substitute teacher that is actually more annoying than your regular teacher.

1) "Jimmy snubstituted my Coke for Diet Coke again, what the hell?"

2) "Mrs. K is horrible I hate her. She's more like a snubstitute teacher."

Snubstitute by nightlifecommando March 5, 2011

substitute

Also called "sub", the poor person, either fresh out of college or old and retired, who fills in for absent teachers. The sub can expect to be ridiculed and tortured by bitch-ass 7th graders who will do anything in their power not to finish an easy worksheet left them by their teacher. The sub is basically a $55/day babysitter.

Bitch-ass kid: Ah hell yeah we got a substitute today! We ain't doin shit! Hey Mister, uhh...Mister!(kid can't read last name on the board because he's an illiterate degenerate) Can I go to da bafroom?

substitute by Zach "Mr." Cress January 25, 2006

substitute person 

1. A person who is the replacement for a significant other, relative, or friend that isn't around anymore.

2. Derived from a quote by Claire from Elizabethtown.

"You and I have a special talent," Claire says to Drew. "And I saw it immediately. We're the substitute people. I've been the substitute person my whole life. I'm not an Ellen a co-worker Drew was into. I never wanted to be an Ellen. And I'm not a Cindy either…I like being alone too much. I mean, I'm with a guy who is married to his academic career. I rarely see him and I'm the substitute person there. I like it that way. It's a lot less pressure."

"Since Anne just broke up with Joe, Emily is Joe's substitute person."

substitute person by XVIII December 9, 2008

Subsistentialism 

The philosophical approach emphasizing the ontological relationship between an existentialist and his personal-use crops.

"Johnny won't share any of his bell peppers; he's into subsistentialism."

Subsistentialism by Aristotle-FuckYeah October 1, 2009

SUBMITTED! Your definition will be reviewed soon. 

you've prob defined at least one word before, comrade.

SUBMITTED! Your definition will be reviewed soon. We might accept(or reject) your definition.

SUBMITTED! Your definition will be reviewed soon. by pdtd September 9, 2021

Submitted! 

When you submit a definition to Urban Dictionary.

Bob: God I’m finally done with my Urban Dictionary definition.

Phone: Submitted!

Submitted! by Removed Sandwich Crust May 25, 2021