drop (redirected from expend)

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

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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 bySclerotinia sclerotiorumand characterized by wilt and stem rot.