cyalume

cyalume is just the brand name of a glowstick that the company, omniglow makes. its also one of the best glowsticks out there that are very bright

hey do you have any cyalume sticks?

by The Conspiracy May 30, 2006

Cyan

A greenish-blue colour that is absolutely gorgeous.

Matt: What shade of blue is that?
Me: It's cyan

by EmberStaar September 7, 2016

Cyamac

Some dude who feels like he has moral high ground over you. He likes to over analyze movies too.

"Dude I watched this movie with Cyamac and he wouldn't stop talking about the deeper meaning!"
"Typical"

by Vegeto the Peen Waggler February 12, 2014

cyarding

The act of playing and being unfaithful to fulfill one desires, sexually or non actually, lacking loyalty, respect, or trust; cheating on someone

cheating unfaithful

"Nigguh, she was by his house again. I'm telling you bro, she is cyarding you.

by Mxjvre May 23, 2016

cyaira

Cyaira means that person is a very kind hearted person. She might be crazy and have a very bad candy addiction, but she is a very out going fun persons to be around. She speaks her mine sand don't not care if u want to hear it, she gives awesome advice to people when they are in need. She us always one of those people u want to be around. She cares or any and everybody that cares for her.Cyaira lives to have so much fun but don't get it fucked up... She will beat a bitch ass if she has to. HAVING A CYAIRA IN YOUR LIFE IS A MUST.

" That girl Cyaira us awesome to be around and fun".

by Leah leake January 14, 2018

Silver Cyanide

Silver Cyanide is used in silver-plating. Its structure consist of -Ag-CN- chains in which the linear two-coordinate Ag+ ions are bridged by the cyanide ions, typical of silver(I) and other d10 ions . (This is the same binding mode as seen in the more famous case of Prussian blue.) These chains then pack hexagonally with adjacent chains offset by +/- 1/3 of the "c" lattice parameter. This is the same as the structure adopted by the high temperature polymorph of copper(I) cyanide. The silver to carbon and silver to nitrogen bond lengths in AgCN are both ~2.09 Å and the cyanide groups show head-to-tail disorder. It has a crystal like, colorless, grey (impure) appearance.

"Imagine knowing all the things about Silver Cyanide and posting it on Urban Dictionary and actually getting somewhere in life."

by Vexacon June 17, 2021

Cyack

derived from the word cock
also see willy,dong,shlong, and sausage

"gee mister, thats a mighty large cyack"
or
"HEY BITCH! suck my cyack"

by Juie Stain December 9, 2003