having or forming a boundary or barrier

He was blocked by a closed door. The house had a closed porch.

brought to a close; concluded

It was a closed incident with no repercussions.

not public; restricted; exclusive

a closed meeting; a closed bid at a private auction.

not open to new ideas or arguments.

self-contained; independent or self-sufficient

a closed, symbiotic relationship.

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

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 ).

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.

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.

adjective

in business , open , running , working , beginning , continuing , started , starting , unsettled , welcoming

adjective

bankrupt , dark , fastened , folded , gone fishing , locked , not open , out of business , out of order * , padlocked , sealed , shut down , concluded , decided , ended , final , over , resolved , settled , restricted , self-centered , self-contained , self-sufficient , self-sufficing , self-supported , self-supporting , self-sustained , self-sustaining , exclusive , private , shut