[ klohzd ]
See synonyms for closed on
  1. having or forming a boundary or barrier: He was blocked by a closed door.The house had a closed porch.

  2. brought to a close; concluded: It was a closed incident with no repercussions.

  1. not public; restricted; exclusive: a closed meeting;a closed bid at a private auction.

  2. not open to new ideas or arguments.

  3. self-contained; independent or self-sufficient: a closed, symbiotic relationship.

  4. Phonetics. (of a syllable) ending with a consonant or a consonant cluster, as has, hasp.: Compare open (def. 35b).

  5. Linguistics. (of a class of items) limited in membership and not readily expanded to include new items, as the class of inflectional affixes, articles, pronouns, or auxiliaries (opposed to open, def. 36).

  6. Hunting, Angling. restricted as to the kind of game that may be legally taken and as to where or when it may be taken: woods closed to deer hunters.

  7. Mathematics.

    • (of a set in which a combining operation between members of the set is defined) such that performing the operation between members of the set produces a member of the set, as multiplication in the set of integers.

    • (of an interval) containing both of its endpoints.

    • (of a map from one topological space to another) having the property that the image of a closed set is a closed set.

    • (of a curve) not having endpoints; enclosing an area.

    • (of a surface) enclosing a volume.

    • (of a function or operator) having as its graph a closed set.

Origin of closed

First recorded in 1175–1225; Middle English; see origin at close, -ed2

Other words from closed

  • half-closed, adjective
  • sem·i·closed, adjective
  • well-closed, adjective

Words Nearby closed Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use closed in a sentence

British Dictionary definitions for closed


/ (kləʊzd) /

  1. blocked against entry; shut

  2. restricted; exclusive

  1. not open to question or debate

  2. (of a hunting season, etc) close

  3. maths

    • (of a curve or surface) completely enclosing an area or volume

    • (of a set) having members that can be produced by a specific operation on other members of the same set: the integers are a closed set under multiplication

  4. Also: checked phonetics

  5. not open to public entry or membership: the closed society of publishing

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012