- not open; shut: a closed door
- covered over or enclosed: a closed wagon
- functioning independently; self-sufficient: a closed economic system
- not receptive to new or different ideas: a closed mind
- not open to further analysis or debate: a closed question
- restricted to certain individuals; exclusive: a closed society
- of or pertaining to a curve with no end points
- of a surface whose plane sections are closed curves
- of a set in which an operation on pairs of its elements always produces an element of the set
- of a set of points containing all its limit points, as the set of points on and within a circle: complementary to an open set
- Phonet. ending in a consonant sound: said of a syllable
- Sports designating a stance, as of a golfer or a batter in baseball, in which the front foot is closer than the rear to an imaginary straight line, as one joining tee and green or one joining home plate and second base
See closed in American Heritage Dictionary 4
- Having boundaries; enclosed: a closed corridor between the two buildings.
- Blocked or barred to passage or entry: a closed port.
- Explicitly limited; restricted: closed membership.
- Self-contained or self-sufficient: a closed relationship.
- Barred to the public; conducted in secrecy: a closed session of the judiciary committee.
a. Of or relating to a curve, such as a circle, having no endpoints.
b. Of or relating to a surface having no boundary curves.
c. Of or relating to an interval containing both its endpoints.
d. Characterized by or possessing the property by which an operation acting on an element in a set produces an element within the set.
- Computer Science Of or relating to a file that cannot be accessed.
- Electricity Allowing electricity to flow or pass: a closed switch.
- Linguistics Ending in a consonant: a closed syllable.
a. Having the forward foot closer to the intended point of impact with the ball than the rear foot: a closed batting stance.
b. Held or swung with the top or outer edge of the striking face pointing slightly closer to the objective than the lower or inner edge: The club face was closed when it hit the ball, causing a hook.
- Physics Relating to a model of the universe in which the mass of the universe is sufficient to halt its expansion, and in which its curvature resembles that of a sphere, such that an object moving in a straight line would eventually return to its starting point.
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