Word.ws English Dictionary

ctr

ctr is the abbreviation of centre.

ctr is the abbreviation of center.

Meaning of centre

Noun

centre (plural centres)

  1. Australia, UK, Canada, Ireland, New Zealand, and South Africa standard spelling of center.
    • So after a short spell in the brass foundry the wisest course was to follow with a similar period in the steel foundry, where much important work was done, including the manufacture of centres for wheels.1944 November and December, A Former Pupil, “Some Memories of Crewe Works—II”, in Railway Magazine, page 343

See all 4 meanings of centre

Meaning of center

Noun

center (plural centers)

  1. (Canada, US, alternative) The point in the interior of a circle that is equidistant from all points on the circumference.
    • If a point be taken within a circle, and more than two equal straight lines fall from the point on the circle, the point taken is the centre of the circle.1908, Euclid, translated by Thomas L. Heath, Elements, III.9
  2. (Canada, US, alternative) The point in the interior of a sphere that is equidistant from all points on the circumference.
    • Japanese scientists are to explore the centre of the Earth. Using a giant drill ship launched next month, the researchers aim to be the first to punch a hole through the rocky crust that covers our planet and to reach the mantle below.2005 June 4, David Adam, The Guardian
  3. (Canada, US, alternative) The middle portion of something; the part well away from the edges.
    1. (Canada, US, alternative, obsolete) The innermost point of the Earth, or the Earth itself, as the center or foundation of the Universe; the center or foundation of the Universe abstractly.
      • [...] their portion set
        As far remov'd from God and light of Heav'n
        As from the Center thrice to th'utmost Pole.1667, John Milton, “Book I”, in Paradise Lost. […], London: […] [Samuel Simmons], and are to be sold by Peter Parker […]; [a]nd by Robert Boulter […]; [a]nd Matthias Walker, […], →OCLC; republished...
  4. (Canada, US, alternative) The point on a line that is midway between the ends.
    Synonyms:
    midpoint
  5. (Canada, US, alternative) The point in the interior of any figure of any number of dimensions that has as its coordinates the arithmetic mean of the coordinates of all points on the perimeter of the figure (or of all points in the interior for a center of volume).
    • The centroid is one of the centres of a triangle

See all 43 meanings of center

Noun capitalized: CTR

CTR (plural CTRs)

  1. (abbreviation, initialism) Initialism of click-through rate.
    • Remember Click-thru rate (CTR) is the number of people who click on an ad …2008, Jerri L. Ledford, Google AdSense for Dummies, John Wiley & Sons, →ISBN
  2. (abbreviation, initialism) Initialism of cash transaction report.
  3. (abbreviation, initialism) Initialism of currency transaction report.
  4. (abbreviation) Abbreviation of calcitonin receptor.
    • Intriguingly, the rat C1b isoform of the calcitonin receptor (CTR) (see Section VI-B) has very little interaction with the thyroidally derived form of calcitonin.1997, Louis V. Avioli, Metabolic Bone Disease and Clinically Related Disorders, page 98
    • Once more significant differences were observed for CTR w/o LIF. (E)- Protein levels for Hexokinase I and II, GAPDH and PKM1/2 were determined by western Blot and quantified by densiometric evaluation.2015 July 6, “Dichloroacetate, the Pyruvate Dehydrogenase Complex and the Modulation of mESC Pluripotency”, in PLOS ONE, →DOI

Phrase capitalized: CTR

CTR

  1. (Mormonism, abbreviation, initialism) Initialism of Choose the Right.

Forms of ctr

pluralctrs
alternative formctr.
pluralCTRs

Questions about ctr

What is ctr the abbreviation of?
Ctr is the abbreviation of centre.
What part of speech is ctr?
Ctr can be a noun or a phrase.
What is the plural of ctr?
The plural of ctr is ctrs.

Words near ctr in the dictionary

  1. CTP
  2. CTPA
  3. CTPAs
  4. CTPs
  5. CTPSE
  6. ctr
  7. ctr.
  8. ctrl
  9. Ctrl-Alt-Delete
  10. Ctrl-Alt-Deleted
  11. Ctrl-Alt-Deletes

Source and license

Adapted from Wiktionary: ctr (page history and authors); CTR (page history and authors); centre (page history and authors); center (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “ctr.” Word.ws, https://word.ws/ctr. Based on Wiktionary, CC BY-SA 4.0.