Meaning of CLOSED in English

CLOSED

transcription, транскрипция: [ ˈklōzd ]

adjective

Date: 13th century

1.

a. : not open

b. : enclosed

c. : composed entirely of closed tubes or vessels

a closed circulatory system

2.

a. : forming a self-contained unit allowing no additions

closed association

b.

(1) : traced by a moving point that returns to an arbitrary starting point

closed curve

also : so formed that every plane section is a closed curve

closed surface

(2) : characterized by mathematical elements that when subjected to an operation produce only elements of the same set

the set of whole numbers is closed under addition and multiplication

(3) : containing all the limit points of every possible subset

a closed interval contains its endpoints

c. : characterized by continuous return and reuse of the working substance

a closed cooling system

d. of a racecourse : having the same starting and finishing point

3.

a. : confined to a few

closed membership

b. : excluding participation of outsiders or witnesses : conducted in strict secrecy

c. : rigidly excluding outside influence

a closed mind

4. : ending in a consonant

closed syllable

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.