Definify.com
Webster 1913 Edition
Addition
Ad-di′tion
,Noun.
[F.
addition
, L. additio
, fr. addere
to add.] 1.
The act of adding two or more things together; – opposed to
“This endless addition or addibility of numbers.” subtraction
or diminution
. Locke.
2.
Anything added; increase; augmentation;
as, a piazza is an
. addition
to a building3.
(Math.)
That part of arithmetic which treats of adding numbers.
4.
(Mus.)
A dot at the right side of a note as an indication that its sound is to be lengthened one half.
[R.]
5.
(Law)
A title annexed to a man’s name, to identify him more precisely;
as, John Doe,
.; Richard Roe, Gent.; Robert Dale, Mason; Thomas Way, of New York; a mark of distinction; a title. Esq
6.
(Her.)
Something added to a coat of arms, as a mark of honor; – opposed to
abatement
. Vector addition
(Geom.)
, that kind of addition of two lines, or vectors, AB and BC, by which their sum is regarded as the line, or vector, AC.
Syn. – Increase; accession; augmentation; appendage; adjunct.
Webster 1828 Edition
Addition
ADDI'TION
,Noun.
1.
The act of adding, opposed to subtraction, or diminution; as, a sum is increased by addition.2.
Any thing added, whether material or immaterial.3.
In arithmetic, the uniting of two or more numbers in one sum; also the rule or branch of arithmetic which treats of adding numbers. Simple addition is the joining of sums of the same denomination, as pounds to pounds, dollars to dollars. Compound addition is the joining of sums of different denominations, as dollars and cents.4.
In law, a title annexed to a man's name, to show his rank, occupation or place of residence; as John Doe, Esq.; Richard Roe, Gent; Robert Dale, Mason; Thomas Way, of New York.5.
In music, a dot at the side of a note, to lengthen its sound one half.6.
In heraldry, something added to a coat of arms, as a mark of honor, opposed to abatements, as bordure, quarter, canton, gyron, pile, &c. See these terms.7.
In distilling, any thing added to the wash or liquor in a state of fermentation.8.
In popular language, an advantage, ornament, improvement; that is, an addition by way of eminence.