Â· 43 comments. in Facts. An intelligence quotient, or IQ, is a score derived from one of several standardized tests designed to assess intelligence. The abbreviation âIQâ comes from the German term Intelligenz-Quotient, originally coined by psychologist William Stern.
Lower explosive limit. Lower explosive limit (LEL): The lowest concentration (percentage) of a gas or a vapor in air capable of producing a flash of fire in presence of an ignition source (arc, flame, heat). The term is considered by many safety professionals to be the same as the lower flammable limit (LFL).
1 In Dutch, lol is a word (not an acronym) which, coincidentally, means fun ( lollig  means funny). 2  In Welsh, lol means nonsense â e.g., if a person wanted to say utter nonsense in Welsh, they would say rwtsh lol.