Skip to main content
Urban Dictionary Merch
Your favorite words on things you can wear, drink from, read, or give to a friend.
The Urban Dictionary Store sells gifts you’ll have to explain.

MuiSecond 

A measure of time equivalent to 10^4 Seconds, or 2.78 Hours.
Person 1: Hey, are you done yet, you said one sec.
Person 2: Oops. sorry. I meant a MuiSecond
MuiSecond by muiluck May 25, 2008

Multisecond 

It is a word that someone with the name Don would use. It is used to describe the amount of time it takes a 22 year old to google something.
Wow, someone at your age should have that information within a few multiseconds.
Multisecond by CpackIa September 24, 2020

the oh-fuck milisecond 

The milisecond in between saying/doing something very inapporopriate/embarassing/stupid/racist/sexist/etc and actually realizing what you just said and that fucked up real bad. This milisecond is usually followed by a silence, awkward staring, and you; feeling as though you'd want to just dissapear right away.
-you, telling an mean black joke
-insert the oh-fuck milisecond here
-realizing just a moment too late that your one black friend is there

minisecond 

Anywhere from a second to a minute, or longer if absolutely necessary
I had a minisecond to do my homework
minisecond by Fhnejsucudh November 3, 2017

Melisenda 

A beautiful girl everyone likes her but know one really gets to know here girls love her boys what to get down her pants but mostly everyone loves her beautiful in and out cares for even one sometimes some people think she is selfish or stuck up but really she tries to blend people say she has a big booty and big boobs but besides that guys love her never in a real relationship if you know a Melisenda hold on to her she is a keeper
Guy: "Damn that Melisenda Girl is fine!"
Girl: "OMG Melisenda is so pretty and perfect she could be my best friend evera!"
Melisenda by KittyCatMeow November 13, 2013

megasecond 

Longer than 1 second but shorter than two.
Wait there, I will just be a megasecond (megasec)
megasecond by natnatnat_ August 25, 2008
More from Urban Dictionary

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
Load more