hatch

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hatch

1
a group of newly hatched animals

hatch

2
1. a covering for a hatchway
2. short for hatchway
3. an opening in a wall between a kitchen and a dining area
4. the lower half of a divided door
5. a sluice or sliding gate in a dam, dyke, or weir

Hatch

Opening in a floor or roof with a removable cover.

Hatch

 

an opening that provides access to the interior of a structure, assembly, or machine. Under normal conditions of use, a hatch is closed; it is opened only to carry out necessary operations.

On a ship, a hatch is an opening in the deck used for loading operations (cargo hatch), communication with below-deck quarters (companion hatch), or admitting air and light below decks (skylight, or porthole). A hatch in an upper deck is usually watertight, its perimeter framed by coamings.

Hatches (portholes) are also installed in the fuselages of air-craft, in spacecraft, in the floors and ceilings of industrial installations, in boilers, and over manholes for access to water, gas, and sewer mains and telephone systems.

hatch

[hach]
(engineering)
A door or opening, especially on an airplane, spacecraft, or ship.

hatch

An opening, equipped with an openable cover, in a roof or floor of a building for passage of people or goods from one level to another or for ventilation.
References in periodicals archive ?
During the 12 d of this treatment, significantly more eggs hatched during the warm than the cold phase (84 vs.
Time of hatching affects development, size, yolk volume, and mortality of newly hatched Macrozoarces americanus (Pisces: Zoarcidae).
If the ancient bird had already hatched, its remains wouldn't have been preserved in such a compact posture.
In the last few years, about 50 percent of all Peregrine chicks born in the upper Midwest were hatched at secluded homes atop stacks at power plants.
These new arrivals will mix well with locally hatched mallards and teal that nested in the Southland's many lakes and marshes.
Though eggs exposed to endosulfan hatched normally, Berrill's team reports in the September Environmental Toxicology And Chemistry, the highest pesticide concentrations caused the resulting tadpoles to temporarily exhibit a depressed "avoidance behavior.
A police officer found and collected blowfly eggs from the body of one cub and wrote down the time when the eggs hatched.