Noun

(uncountable) The quality of being different.

(countable) A characteristic of something that makes it different from something else.

* {{quote-magazine, title=Towards the end of poverty

, date=2013-06-01, volume=407, issue=8838, page=11, magazine=(The Economist) citation , passage=But poverty’s scourge is fiercest below $1.25 (the average of the 15 poorest countries’ own poverty lines, measured in 2005 dollars and adjusted for differences in purchasing power): people below that level live lives that are poor, nasty, brutish and short.}}

(countable) A disagreement or argument.

We have our little differences , but we are firm friends.

* Shakespeare

What was the difference ? It was a contention in public.

* T. Ellwood

Away therefore went I with the constable, leaving the old warden and the young constable to compose their difference as they could.

(countable, uncountable) Significant change in or effect on a situation or state.

* 1908 , (Kenneth Grahame), (The Wind in the Willows)

The line of the horizon was clear and hard against the sky, and in one particular quarter it showed black against a silvery climbing phosphorescence that grew and grew. At last, over the rim of the waiting earth the moon lifted with slow majesty till it swung clear of the horizon and rode off, free of moorings; and once more they began to see surfaces—meadows wide-spread, and quiet gardens, and the river itself from bank to bank, all softly disclosed, all washed clean of mystery and terror, all radiant again as by day, but with a difference that was tremendous.

(countable) The result of a subtraction; sometimes the absolute value of this result.

(obsolete) Choice; preference.

* Spenser

That now be chooseth with vile difference / To be a beast, and lack intelligence.

(heraldry) An addition to a coat of arms to distinguish two people's bearings which would otherwise be the same. See augmentation and cadency.

(logic) The quality or attribute which is added to those of the genus to constitute a species; a differentia.

(logic circuits) A Boolean operation which is TRUE when the two input variables are different but is otherwise FALSE; the XOR operation ($\backslash scriptstyle\; A\; \backslash overline\; B\; +\; \backslash overline\; A\; B$).

(relational algebra) the set of elements that are in one set but not another ($\backslash scriptstyle\; A\; \backslash overline\; B$).

Noun

(en noun)

The way in which something is positioned vis-à-vis its surroundings.

* 1908 , (Kenneth Grahame), (The Wind in the Willows) :

...he being naturally an underground animal by birth and breeding, the situation of Badger's house exactly suited him and made him feel at home; while the Rat, who slept every night in a bedroom the windows of which opened on a breezy river, naturally felt the atmosphere still and oppressive.

The place in which something is situated; a location.

* 1833 , Thomas Hibbert and Robert Buist, The American Flower Garden Directory , page 142:

[Hibíscus] speciòsus is the most splendid, and deserves a situation in every garden.

Position or status with regard to conditions and circumstances.

The combination of circumstances at a given moment; a state of affairs.

*

, title=(The Celebrity), chapter=5 , passage=Then we relapsed into a discomfited silence, and wished we were anywhere else. But Miss Thorn relieved the situation by laughing aloud, and with such a hearty enjoyment that instead of getting angry and more mortified we began to laugh ourselves, and instantly felt better.}}

(UK, dated) A position of employment; a post.

* 1913 , , (Sons and Lovers) , Penguin 2006, page 78:

When he was nineteen, he suddenly left the 'Co-op' office, and got a situation in Nottingham.

* 1946 , Vaughn Horton, Denver Darling, Milt Gabler, :

You take a morning paper from the top of the stack

And read the situations from the front to the back

The only job that's open need a man with a knack

So put it right back in the rack Jack.

A difficult or unpleasant set of circumstances; a problem.

Boss, we've got a situation here...