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The length of the path travelled by light in a vacuum during the time interval of 1/299792458 seconds.
The caesium 133 atom can switch periods of radiation 30.663318988498369762190615215544 times in the time it takes light to travel 1 metre.
metre by lj90 September 28, 2007
Urban Dictionary Merch
A measure of length, the base unit for length in the metric scale. Although spelt "meter" in the United States, the proper spelling is "metre".
One metre equals one thousand centimetres
One metre is also equal to 3.28 feet
metre by Brett5 January 1, 2009
Related Words
n. impractical French unit of length based roughly on the circumference of the earth. Supporters claim that metres (and other metric measures) are more practical than Imperial measures despite the invention of the 'metric foot' (0.3 metres) and the 'metric yard' (0.9 metres), which defy the point of metrication.
Give them 25.4 millimetres and they'll take 1.6093 kilometres!
metre by Hodgit August 6, 2004

Social Metre 

A metre for how long a person can be in a social situation for, once it's drained its time to leave
Person 1: I'm gonna go
Person 2: Why?
Person 1: My social metres drained, need to recharge
Social Metre by Zipped_thunder April 12, 2020

Maco metre

(Pronounced mah-co-me-tah)
A Trinbagonian word which describes an imaginary and innate instrument whereby someone (a "maco" or "farse" person) is able to detect an opportunity to eavesdrop.
Wheeyy!! Yuh maco metre sharp boy! How you hear dat?
Maco metre by Jenn Lee May 1, 2010

Metreklunk

German swear word meaning stupid person or action. Also an exclamation of anger, similar to the American “Fuck”
“You’re such a Metreklunk”

“Metreklunk!”
Metreklunk by MullerK May 12, 2019

SPESS MEHREEN 

An alternate spelling of space marine, often used to make fun of Indrick Boreale's accent in the video game Dawn of War: Soulstorm
Indrick Boreale: We fight for our honor as Blood Ravens, as SPESS MEHREENS... and we will fight in the name of the EMPRAH!
SPESS MEHREEN by Flash Dude November 26, 2010
More from Urban Dictionary
A group of people, typically women, searching through someone’s digital footprint in order to find more information about that person.
Susie wasn’t sure if her new Hinge match was a creep, so she assembled Galantir and they found out he used to post slurs on gaming forums.
Galantir by Ge-sus September 22, 2026
Word of the Day on September 23, 2026

murderhobo 

In a tabletop game, a murderhobo is a player who murders NPCs indiscriminately. This is normally derogatory, referring to a player who totally ignores quests, dialog, backstory, trade, world building etc.

The term is most common with Dungeons and Dragons, but it can be applied to most RPGs where the player is allowed to kill most quest-giving NPCs and NPC traders. E.g. Elder Scrolls, Fallout, Divinity original sin.
DM: The sad little orphan girl tugs at Steve's trenchcoat to get his attention, and ask for help saving her pet dog from...
Steve: I'd like to roll a strength check against strangling the orphan.
Dave: I call dibs on the dog.
DM: You murderhobos disgust me.
murderhobo by Loup&S September 9, 2021
Word of the Day on September 22, 2026
In sales terms, a whale is a prospect that is significantly larger than an organization’s average customer.

Whales are large and extremely difficult to close. Due to their immense size, they are highly sought-after.

A whale is typically identified at first by a whale hunter on the sales team, but often requires cross-discipline participation in order to close; this includes assistance from operations, engineering, creative, client success, and business development teams.
"Shit...the sales director chewed me out on the sales call this morning. He's totally pissed that I have nothing in my pipeline. I've been focused on this one whale for so long that I haven't had time to prospect for normal-sized deals."
Whale by FQ_GFY February 3, 2020
Word of the Day on September 21, 2026

Concrete cowboy 

A guy who thinks he's a country kinda guy, but in reality lives a comfortable city / suburban life.
Eugene: Look at that dude in the cowboy hat!
Todd: He's just a concrete cowboy.
Word of the Day on September 20, 2026
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