Word.ws English Dictionary

first-class object

first-class object noun: an entity that can be constructed at run-time, passed as a parameter, returned from a function, or assigned into a variable.

Noun

first-class object (plural first-class objects)

  1. An entity that can be constructed at run-time, passed as a parameter, returned from a function, or assigned into a variable.
  2. An entity that can pass a value as a parameter, can be returned from a subroutine, and can be assigned into a variable. (This is the definition according to Raphael Finkel, who uses the terms of second- and third-class objects.)

Synonyms of first-class object

Forms of first-class object

pluralfirst-class objects

Questions about first-class object

What does first-class object mean?
First-class object means an entity that can be constructed at run-time, passed as a parameter, returned from a function, or assigned into a variable.
What part of speech is first-class object?
First-class object is a noun.
What is the plural of first-class object?
The plural of first-class object is first-class objects.

Words near first-class object in the dictionary

  1. first-class citizens
  2. first-class continuation
  3. first-class continuations
  4. first-class entities
  5. first-class entity
  6. first-class object
  7. first-class objects
  8. first-class value
  9. first-class values
  10. first-come first-served
  11. first-come, first-served

Source and license

Adapted from Wiktionary: first-class object (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: “first-class object.” Word.ws, https://word.ws/first-class_object. Based on Wiktionary, CC BY-SA 4.0.