abscissa

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English[edit]

A point in the Cartesian plane; x is the abscissa.

Etymology[edit]

By ellipsis from Latin [linea] abscissa, feminine of abscissus, perfect passive participle of abscindō (cut off). See abscind.

Pronunciation[edit]

  • (US) IPA(key): /æbˈsɪs.ə/
  • (file)
  • Hyphenation: ab‧scis‧sa

Noun[edit]

abscissa (plural abscissas or abscissae or abscissæ)

  1. (geometry) The first of the two terms by which a point is referred to, in a system of fixed rectilinear coordinate (Cartesian coordinate) axes. The abscissa is also known as the "x" coordinate of a point, shown on the horizontal line, with the ordinate, also known as the "y" coordinate, shown on the vertical line. [First attested in the late 17th century.][1]
    The point has 3 as its abscissa and 2 as its ordinate.

Usage notes[edit]

Originally, it referred to the portion of a line between a fixed point on that line and the intersection of that line with an ordinate.[1]

Synonyms[edit]

See also[edit]

Translations[edit]

References[edit]

  1. 1.0 1.1 “abscissa” in Lesley Brown, editor-in-chief; William R. Trumble and Angus Stevenson, editors, The Shorter Oxford English Dictionary on Historical Principles, 5th edition, Oxford; New York, N.Y.: Oxford University Press, 2002, ISBN 978-0-19-860457-0, page 8.

Latin[edit]

Etymology[edit]

From abscissus, perfect passive participle of abscindō (tear away)

Pronunciation[edit]

Noun[edit]

abscissa f (genitive abscissae); first declension

  1. (mathematics) abscissa

Inflection[edit]

First declension.

Case Singular Plural
nominative abscissa abscissae
genitive abscissae abscissārum
dative abscissae abscissīs
accusative abscissam abscissās
ablative abscissā abscissīs
vocative abscissa abscissae

Descendants[edit]

Participle[edit]

abscissa

  1. nominative feminine singular of abscissus
  2. nominative neuter plural of abscissus
  3. accusative neuter plural of abscissus
  4. vocative feminine singular of abscissus
  5. vocative neuter plural of abscissus

abscissā

  1. ablative feminine singular of abscissus

Portuguese[edit]

Noun[edit]

abscissa f (plural abscissas)

  1. (geometry) abscissa (first of two coordinates)

Swedish[edit]

Noun[edit]

abscissa c

  1. Alternative spelling of abskissa; abscissa

Declension[edit]

Declension of abscissa 
Singular Plural
Indefinite Definite Indefinite Definite
Nominative abscissa abscissan abscissor abscissorna
Genitive abscissas abscissans abscissors abscissornas