drop

(redirected from droppable)
Also found in: Dictionary, Thesaurus, Medical, Financial.

drop

1. a steep or sheer incline or slope
2. Military the act of unloading troops, equipment, or supplies by parachute
3. Theatre See drop curtain
4. Nautical the midships height of a sail bent to a fixed yard
5. Austral Cricket slang a fall of the wicket
6. See drop shot
7. Rugby short for drop kick, drop-kick See also drop off dropout

Drop

Any one of the guttae attached to the underside of the mutules or triglyphs of a Doric entablature.

Drop

 

a small volume of liquid that is bounded in a state of equilibrium by a surface of rotation.

Drops form when a liquid flows slowly out of a small opening or runs off the edge of a surface, as well as when a liquid is atomized or emulsified. Drops also form when vapors condense on solid nonwettable surfaces and on condensation nuclei (ions, dust particles) in gaseous media; water droplets in the atmosphere arise in this way in the formation of dew, fog, and clouds.

The form of a drop is determined by the effect of surface tension (tending to decrease the surface of the drop) and external forces (above all, gravity). Microscopic drops for which gravity is not a decisive factor, and drops under the conditions of weightlessness have the form of a sphere, which is a body with minimum surface for a given volume. Large drops under earth conditions take a spherical form only when the densities of the drop and of the surrounding medium are equal. Falling raindrops, affected by gravity, the pressure of the opposing air current, and surface tension, assume the shape of a bun (broader across than vertically). Drops assume the shape of a flattened sphere on nonwettable surfaces, and they spread out on wettable surfaces.

The form and size of drops breaking away from the end of a capillary tube (pipette) depend on the diameter of the tube, the surface tension o~, and the density of the liquid. This relationship forms the basis for the determination of the surface tension of liquids from the weight of the drops leaving a vertical cylindrical tube (stalagmometer) and from the shape of the drops suspended from the end of a tube or resting on a flat surface.

IU. N. DROZHZHIN

drop

[dräp]
(fluid mechanics)
The quantity of liquid that coalesces into a single globule; sizes vary according to physical conditions and the properties of the fluid itself.
(hydrology)
The difference in water-surface elevations that is measured up-and downstream from a narrowing in the stream.
(metallurgy)
A casting defect due to the falling of a portion of sand from an overhanging section of the mold.
(mineralogy)
A funnel-shaped downward intrusion of sedimentary rock into the roof of a coal seam.
(plant pathology)
A fungus disease of various vegetables caused by Sclerotinia sclerotiorum and characterized by wilt and stem rot.

drop

1. Any one of the guttae under the mutules or triglyphs of a Doric entablature.
2. In a cabinet lock, the vertical dimension from the finished edge of the lock to the center of the cylinder or tube.
3. In air conditioning, the vertical distance that a horizontally projected airstream falls from its original elevation when leaving an outlet, measured at the end of the throw.
4. Same as drop curtain.
5. Same as drop panel.
6. Of a stair, a fitting used to close the bottom end of a tubular newel.
7. Same as pendant, 2; also see corner drop.
8. Same as turned drop.
References in periodicals archive ?
Supply of drifting buoys instrumented air droppable area, including a drogue centered 50 cm below the surface.
It has reached such a point now that Eriksson's loyalty towards Beckham is in real danger of costing him his job because until he realises every player is droppable then he will carry on picking under-achieving players at the expense of the team.
One World Cup may put him ahead of Ryan Giggs, but it is hardly enough for a player, described recently by one commentator, as the "least droppable player in Europe".
The main services to be provided are - The development and production of drays ATVs light military air droppable (a payload of about 400 kg and 600 kg);- The development and production of air-droppable trailers flatbed truck vehicle (a payload of about 200 kg and 400 kg);- The integration of various communication systems providing interfaces;- The provision of cross equipment (nannies supports Infrared headlights, flash lamp holders, DAGR media, Defense Advanced GPS Receiver, extinguishing media, search lights, ...);- The development and supply of the drays support system (tools, spare parts, documentation, training) and support benefits and MCO (Maintenance in Operational Condition) lump.
The air-transportable and droppable HMMWV family includes utility / cargo, shelter / armament carrier, ambulance, TOW missile carrier and scout-reconnaissance configuration.
Also on display are the air droppable LUU-2 and 19 (visible and infrared) and the M257/278 Hydra rocket launched illuminating flares (visible and infrared).
Contract notice: Rest home le doux repos food market - consumables - droppable and maintenance products.
Contract notice: Work of creation crocs droppable remote control on the quay ferry terminal t2 ouistreham.
lot 5 droppable Housings 3.5 Tonnes / Threshold maximum per period amounts 10
Lot No 4: 1 arm polybenne lifting hook-MG 1 or equivalent, one tarpaulin system for boxes droppable.