Low Explosive Limit. Explosive Limits The range of concentrations (% by volume in air) of a flammable gas or vapor that can result in an explosion from ignition in a confined space. Usually given as Upper and Lower Explosive Limits (see UEL and LEL).
The LEL meter was downstream of the methanol tank.
by Lynn Duffield January 25, 2005
Top Definition
Unlike what many people think lel is not an acronym in the same fashion that LOL is (it does not mean laughing extremely loud, laughing extra loud or similar). Lel (and variations including lal) resulted from the use of random vowels substituted in place of the 'o' in LOL. These vowels were used in an attempt to be different from the millions of internet game fags. The word however, in essence, still means LOL.
guy1: generic xyz funny comment
guy2: lel
gu2: *explodes*
by funward May 28, 2008
Always in lower caps. Used when someone finds something derisory or pathetic. Its use depends on the mood of the user: the more bored they are, the more they'll be inclined to use it.

Pronunciation: lɛl
Etymology: lol, with the o replaced by an e. The reason is phonetic: lel, when pronounced, seems a bit more sarcastic.
A: I watched a censored porn movie last night
B: lel.

A: I + 2 = 3, and H - 2 = 5, (random bs that lasts for 2 pages) thus I + H = 2
B: lel, took me a while to realize you were trolling.
by Pat Power April 12, 2013
Primarily the same definition as "lol", but simply for people who want to be different, and original.
Rowan: Hey, Douglas, Jack got run over today.

Douglas: lel

Rowan: Omg, Douglas, he's in a serious condition! He could die!

Douglas: lel
by Tavv November 06, 2013
A retarded version of 'lol'
Guy 1: lol
Guy 2: lel
by randomano July 12, 2015
The troll version of lol
Someone gets pwned in a funny way
I say lel
by chdcchris September 19, 2015
Unlike thought by many, lel does not necessarily mean the same thing as lol. It can also be used to express indifference, excitement, disappointment or unwillingness to do something. The most important part here is the intonation that is used by the speaker and the facial and/or body language that is being expressed.
guy1: bro we totally gotta start working on our geography assignment, it's due tomorrow!
guy2: lel..

guy1: breh we almost out of ganja
guy2: lel..
guy1: lel..........

guy1: LEL I just passed my exam!
guy2: lel breh please don't remind me of it.. i totally lel'd it..
by Lythox October 25, 2015

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