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.

Bono-nucleosis 

An abnormal inflation of the ego generally attributed to lead vocalists. Common symptoms include douchy behaviour and failure to acknowledge band mates as equals. Term coined by Steve Terreberry.
That guy’s Bono-nucleosis makes me sick.
Bono-nucleosis by StringedGuitar17 October 27, 2021

kilonova nucleosynthesis 

The recently confirmed hypothesis that heavy elements are created as a consequence of a violent two-neutron star merger.
You mean to tell me that the gold, silver and platinum in my jewelry and the plutonium used in atomic weapons were made in the merger of neutron stars?
Yup, it's called kilonova nucleosynthesis; you get powerful gravitational waves also...check out LIGO!
kilonova nucleosynthesis by YAWA October 16, 2017

nucleotide 

A subunit of nucleic acid (e.g, deoxyribonucleic acidDNA or ribonucleic acidRNA). It consists of a 5-carbon sugar, a phosphate group, and a nitrogenous base (e.g., thymine, guanine, cytosine, adenine, or uracil).

Also, they are integrated into the cofactors of enzymatic reaction.

Furthermore, in cellular signalling, they are involved as cyclic adenosine monophosphate and cyclic guanosine monophosphate.

Lastly, nucleotides can also be chemical energy sources in the form of adenosine triphosphate(ATP), a core of metabolism.
While working with fish DNA, he replaced a single nucleotide with a different nucleotide.

OR

The jogger used more of her ATP molecules when she ran.

nucleotard 

Someone who thinks that their job, social status, income, race, gender, sexual preference, or lack thereof, separates them from society and the requirements of being a respectable member within. A person that thinks they are both separated from society and insulated from its consequences.
Did you see the Shia LaBeouf arrest video? What a nucleotard.
nucleotard by Fission_Chips October 7, 2017
Wow, you're acting like a nucleo, i'm impressed.
Nucleo by Josh December 10, 2003

nucleoelectronic charge 

the charge and attraction between the nucleus of an ion/atom and the electrons around it.

a better/more scientific/specific word for attraction.
An Anion has a decreased nucleoelectronic charge compared to its parent atom due to increase shielding.
nucleoelectronic charge by siimvn January 12, 2021
More from Urban Dictionary

Slop Grenade

When someone uses AI to generate a large document, slide deck, or piece of code/software and tosses it over the fence for you to deal with.
Chad: Hey Brent I sent you the new backend API change to review, it’s only 100 files changed.

Brent: he just tossed me a slop grenade
Slop Grenade by Joe Squid September 28, 2026
Word of the Day on September 29, 2026
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
After we broke up, he was floxi to me.
floxi by Dr. Geek May 13, 2009
Word of the Day on September 28, 2026
NYC people who migrate north to Quahog, RI to see the leaves in the fall.
New York and everyone from there can fornicate themselves with an iron stick.
leafers by ss++ February 8, 2005
Word of the Day on September 27, 2026

Respectfully 

Precedes or follows either a gratuitously disrespectful or honest remark, originated in New York City. Used in similar fashion to "no offense" or "to be honest," interchangeably.
Ya mans is wild buns, respectfully. Respectfully he's washed.

After school, The Modells on Jamaica Ave was active. Respectfully.
Respectfully by john quan the first December 20, 2020
Word of the Day on September 26, 2026

You met me at a very Chinese time in my life

A moment in time where you feel distinctly Chinese over all other things.
Dante: "I wish I could be Nigerian, but I can't because I'm Chinese. You met me at a very Chinese time in my life."
Word of the Day on September 25, 2026
Adjective. Used to describe persons who have adjusted or altered their lifestyle for environmental reasons. Crunchy persons tend to be politically strongly left-leaning and may be additionally but not exclusively categorized as vegetarians, vegans, eco-tarians, conservationists, environmentalists, neo-hippies, tree huggers, nature enthusiasts, etc.

Also used to describe establishments where alternative foods and products are sold, i.e. natural food stores.

Modified derivative of granola.
"I need more crunchy guys in my life. I'm so tired of dating preppy metrosexual assholes."

"I'm heading out to the crunchy store to pick up some fair trade chocolate and tea tree oil, do you need anything?"
crunchy by EBC July 11, 2007
Word of the Day on September 24, 2026
Load more