Word.ws English Dictionary

cadr

/ˈkɑːdə/

cadr noun: car of the cdr in Lisp. The second element in a list.

Noun (1)

cadr (plural cadrs)

  1. Car of the cdr in Lisp. The second element in a list.
    • If we let x denote the tree (1 2 3), then the car of x is 1, the cdr of x is (2 3), the cadr of x is 2, the caddr of x is 3, and the cdddr of x is nil.2000, Matt Kaufmann, Panagiotis Manolios, J. Strother Moore, Computer-Aided Reasoning: An Approach

Noun (2) capitalized: CADR

CADR (uncountable)

  1. (US, abbreviation, initialism) Initialism of Clean air delivery rate, a measure of cleaned air from air purifiers.

Forms of cadr

pluralcadrs

Origin of cadr

Contraction of car of the cdr.

Words formed from cadr

Questions about cadr

What does cadr mean?
Cadr means car of the cdr in Lisp. The second element in a list.
What part of speech is cadr?
Cadr is a noun.
How do you pronounce cadr?
Cadr is pronounced /ˈkɑːdə/.
What is the plural of cadr?
The plural of cadr is cadrs.

Words near cadr in the dictionary

  1. Cadousian
  2. Cadousians
  3. Cadoxton
  4. Cadoxton-juxta-Neath
  5. CADPAT
  6. cadr
  7. cadralazine
  8. cadrans
  9. cadre
  10. cadreman
  11. cadremen

Source and license

Adapted from Wiktionary: cadr (page history and authors); CADR (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.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: en-us-cadr.ogg.

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