English Explanatory Dictionary

addition

English dictionary entry

Meanings

noun
  1. The act of adding anything.
  2. Anything that is added.
  3. The arithmetic operation of adding.
  4. A dot at the right side of a note as an indication that its sound is to be lengthened one half.
  5. A title annexed to a person's name to identify him or her more precisely.
  6. Something added to a coat of arms, as a mark of honour.
  7. an organic reaction where two or more molecules combine to form a larger one (the adduct).

Pronunciation

/əˈdɪʃ.ən/ en-us-addition.ogg /ˈə.ɖɪ.ʃən/

Word forms

addition additions

Etymology

Etymology tree Proto-Indo-European *h₂éd Proto-Italic *ad Proto-Italic *ad- Latin ad- Proto-Indo-European *dʰeh₁- Proto-Indo-European *dʰéh₁tder. Proto-Italic *-ðō Latin -dō Latin addō Latin additiōder. Old French aditionder. Middle English addicioun English addition Sense of “what is added” dates from 14th century, from Middle English addicioun, addition, from Old French adition, from Latin additiōnem, accusative singular of additiō, from addō (“add, put”).

Synonyms

supplement addition adding annexation inclusion extra

Antonyms

exclusion reduction deduction subtraction removal abatement

Related words

add adder additive plus sign + = + = − = × = × = ÷ = remainder left over if divisor does not divide dividend

Derived words

additional additionary additionist addition polymerisation addition polymerization addition reaction addition sign coaddition cycloaddition digitaddition gyroaddition heteroaddition in addition in addition to isoaddition Michael addition misaddition nonaddition photoaddition polyaddition readdition retroaddition spike addition superaddition
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