Addition vs. Extra — What's the Difference?

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Addition (usually signified by the plus symbol +) is one of the four basic operations of arithmetic, the other three being subtraction, multiplication and division. The addition of two whole numbers results in the total amount or sum of those values combined.

Extra

Something more than is usual or necessary
Bought too much paint and gave the extra to a friend.

The action or process of adding something to something else
The hotel has been extended with the addition of more rooms

Extra

More than or beyond what is usual, normal, expected, or necessary
Earned extra money by freelancing.

The process of calculating the total of two or more numbers or amounts
She began with simple arithmetic, addition and then subtraction

Extra

Coffee does not come with dinner but is extra.

The operation that, for positive integers, consists of increasing by a definite number of increments of 1. The operation is extended to other numbers according to the additive properties of positive integers and other algebraic properties.

Extra

Something, such as an accessory on a motor vehicle, for which an additional charge is made.

Any of certain analogous operations involving mathematical objects other than numbers.

Extra

A special edition of a newspaper.

The process of adding or joining something to something else, typically to make it larger
The addition of a porch to the house would increase its resale value.

Extra

A performer hired to play a minor part, as in a crowd scene in a film.

This painting would make a fine addition to the museum's collection.

Extra

To an exceptional extent or degree; unusually
Extra dry.

(uncountable) The act of adding anything.
The addition of five more items to the agenda will make the meeting unbearably long.

Extra

(not comparable) Beyond what is due, usual, expected, or necessary; extraneous; additional; supernumerary.
I don't mind doing some extra work, as long as I get extra pay.

Extra

Extraordinarily good; superior.

(uncountable) The arithmetic operation of adding.

Extra

Over the top; going beyond what is normal or appropriate, often in a dramatic manner.
You unfollowed her for posting cat memes? You're so extra!
Wow, you're more extra than she is. You're the most extra friend I have.

(music) A dot at the right side of a note as an indication that its sound is to be lengthened one half.

Extra

Denotes more.
She wants extra pickles on her burger.

A title annexed to a person's name to identify him or her more precisely.

Extra

(informal) To an extraordinary degree.
That day he ran to school extra fast.

(heraldry) Something added to a coat of arms, as a mark of honour.

Extra

Something additional, such as an item above and beyond the ordinary school curriculum, or added to the usual charge on a bill.

The act of adding two or more things together; - opposed to subtraction or diminution.

Extra

An extra edition of a newspaper, which is printed outside of the normal printing cycle, for example to report an important late-breaking event.

Anything added; increase; augmentation; as, a piazza is an addition to a building.

Extra

(cricket) A run scored without the ball having hit the striker's bat - a wide, bye, leg bye or no ball.

That part of arithmetic which treats of adding numbers.

Extra

(acting) A supernumerary or walk-on in a film or play.

A dot at the right side of a note as an indication that its sound is to be lengthened one half.

Extra

(slang) The state or trait of being over the top, of behaving in an overly dramatic manner.
Stop! I can't deal with all your extra today!

A title annexed to a man's name, to identify him more precisely; as, John Doe, Esq.; Richard Roe, Gent.; Robert Dale, Mason; Thomas Way, of New York; a mark of distinction; a title.

Extra

Something of an extra quality or grade. en

Something added to a coat of arms, as a mark of honor; - opposed to abatement.

Extra

Beyond what is due, usual, expected, or necessary; additional; supernumerary; also, extraordinarily good; superior; as, extra work; extra pay.

A component that is added to something to improve it;
The addition of a bathroom was a major improvement
The addition of cinammon improved the flavor

Extra

Something in addition to what is due, expected, or customary; esp., an added charge or fee, or something for which an additional charge is made; as, at some hotels air conditioning is an extra.

The act of adding one thing to another;
The addition of flowers created a pleasing effect
The addition of a leap day every four years

Extra

An edition of a newspaper issued at a time other than the regular one.

There was an addition to property taxes this year
They recorded the cattle's gain in weight over a period of weeks

Extra

A run, as from a bye, credited to the general score but not made from a hit.

The librarian shelved the new accessions
He was a new addition to the staff

Extra

Something of an extra quality or grade.

A suburban area laid out in streets and lots for a future residential area

Extra

A minor actor in crowd scenes

The arithmetic operation of summing; calculating the sum of two or more numbers;
The summation of four and three gives seven
Four plus three equals seven

Extra

An additional edition of a newspaper (usually to report a crisis)

Extra

Something additional of the same kind;
He always carried extras in case of an emergency

Extra

Need extra help
An extra pair of shoes
I have no other shoes
There are other possibilities

Extra

More than is needed, desired, or required;
Trying to lose excess weight
Found some extra change lying on the dresser
Yet another book on heraldry might be thought redundant
Sleeping in the spare room
Supernumerary ornamentation
It was supererogatory of her to gloat
Delete superfluous (or unnecessary) words
Extra ribs as well as other supernumerary internal parts
Surplus cheese distributed to the needy

Extra

A special holiday flight
Put on special buses for the big game

Extra

Unusually or exceptionally;
An extra fast car