deluminator 

a concept made by Rolling (in Harry Potter books), referring to Dumbeldore's silverish tool used to shut down the lights (or to deluminate)

"There's too much light here, hmmm"
"Shud I use the Deluminator?"
"ye"

deluminator by No1One August 24, 2007

deluminator 

also known as a Put-Outer, i.e. someone who puts out

Fred: That girl last night...?
George: Ya Fred, total deluminator...
Fred: You don't mean...?
George: Yes, we were "snogging" all night

deluminator by Zeke Cardigan March 30, 2016

deluminate

The opposite of illuminate.

To dim or "turn down" (as in lighting)

The room was too bright, so Jodi asked me to deluminate it.

deluminate by Reverend Sir Dope E. Fresh August 11, 2003

Lowest Common Denominator

A particular type of obnoxious person one encounters in extremely large groups, or where everybody is universally included. Because there are so many people, there is a significantly higher probability of idiotic people.

Facebook comment sections are terrible. It's just giving voice to the lowest common denominator.

Lowest Common Denominator by ButIDontLikeCheeseIts March 22, 2016

Lowest Common Denominator

1. The number underneath in a fraction after simplification

2. A dumbass or a group of dumbasses

1. "I got half marks in that maths test because I didn't simplify to the lowest common denominator"

2. "I got into a fight with a group of the lowest common denominator, mate"

Lowest Common Denominator by psychedelic_fuzz June 18, 2007

Dumbest Common Denominator 

The most logically-challenged portion of the general population for which the most obvious warnings, posts, signs and instructions must be written or designed to avoid catastrophe.

On the lid of the coffee cup: Contents may be hot.
On a package of kitchen knives: Caution! Items are sharp.
On a trash bag: Do not place over head.
At a railroad crossing: No parking.
On a clothes dryer: Do not place children or animals inside.

"This is the dumbest sign I've ever seen. Do they think I'm a complete moron?"

"Dude. Gotta plan for the Dumbest Common Denominator."

Dumbest Common Denominator by Upallnightagain September 25, 2011

Slowest Common Denominator

The kid in class who slows down the rest by having to get every last thing repeated to him/her 8 times before understanding it.

Teacher 1) I hear you got Tommy and Linda in English class. I had them last year. They're some really bright kids.

Teacher 2) Yeah, but I feel horrible. It's damn near Christmas and we still haven't finished basic sentence structure because Kyle still doesn't understand subject-verb agreement and he asks me 2 dozen questions per class that I've already answered.

Teacher 1) That's always so unfortunate, when the brightest in the bunch are put in the same classes as the Slowest Common Denominator.

Teacher 2) Yeah. I wish there was room in the budget to have more advanced classes.

Slowest Common Denominator by daphunkeefeel1 July 17, 2012