ADDITION
addition
(noun) 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”
summation, addition, plus
(noun) 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”
addition, add-on, improver
(noun) a component that is added to something to improve it; “the addition of a bathroom was a major improvement”; “the addition of cinnamon improved the flavor”
addition
(noun) a suburban area laid out in streets and lots for a future residential area
accession, addition
(noun) something added to what you already have; “the librarian shelved the new accessions”; “he was a new addition to the staff”
addition, increase, gain
(noun) a quantity that is added; “there was an addition to property taxes this year”; “they recorded the cattle’s gain in weight over a period of weeks”
Source: WordNet® 3.1
Etymology
Noun
addition (countable and uncountable, plural additions)
(uncountable) The act of adding anything.
Anything that is added.
(uncountable) The arithmetic operation of adding.
(music) A dot at the right side of a note as an indication that its sound is to be lengthened one half.
(chiefly, legal) A title annexed to a person's name to identify him or her more precisely, as in "John Doe, Esq.", "Robert Dale, Mason", "Thomas Way, of New York".
(heraldry) Something added to a coat of arms, as a mark of honour; opposed to abatement.
Synonyms
• (act of adding): adding, annexation, inclusion
• (thing added): extra, supplement; See also adjunct
Antonyms
• (act of adding): exclusion, reduction
• (thing added): deduction, reduction; See also decrement
• (arithmetic operation): subtraction
Source: Wiktionary
Ad*di"tion, n. Etym: [F. addition, L. additio, fr. addere to add.]
1. The act of adding two or more things together; -- opposed to
subtraction or diminution. "This endless addition or addibility of
numbers." Locke.
2. Anything added; increase; augmentation; as, a piazza is an
addition to a building.
3. (Math.)
Definition: That part of arithmetic which treats of adding numbers.
4. (Mus.)
Definition: A dot at the right side of a note as an indication that its
sound is to be lengthened one half. [R.]
5. (Law)
Definition: 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.
6. (Her.)
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition