- (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.
Examples from the Web for half-closed
There he stopped to peer into the room through the half-closed door.A Son of the City|Herman Gastrell Seely
He smiled broadly upon them with half-closed eyes, and shook hands again.The Damnation of Theron Ware|Harold Frederic
His head was wearily thrown on the back of the chair, his eyes, half-closed, he seemed to be reflecting over something.Mother|Maksim Gorky
As there was no one about to announce her, she walked slowly toward the half-closed door of the inner office.Marjorie Dean, High School Junior|Pauline Lester
He looked at the Pug, and the Pug winked knowingly with his half-closed left eyelid.The White Moll|Frank L. Packard
British Dictionary definitions for half-closed (1 of 2)
British Dictionary definitions for half-closed (2 of 2)
- (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 setthe integers are a closed set under multiplication
- denoting a syllable that ends in a consonant
- another word for close 1 (def. 21)
Word Origin and History for half-closed
c.1200, past participle adjective from close (v.). Closed circuit is attested from 1827; closed shop in union sense from 1904; closed system first recorded 1896 in William James.