trough

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trough

1. a narrow depression either in the land surface, ocean bed, or between two successive waves
2. Meteorol an elongated area of low pressure, esp an extension of a depression
3. Physics the portion of a wave, such as a light wave, in which the amplitude lies below its average value
4. Economics the lowest point or most depressed stage of the trade cycle
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

trough

[trȯf]
(geology)
A small, straight depression formed just offshore on the bottom of a sea or lake and on the landward side of a longshore bar.
Any narrow, elongate depression in the surface of the earth.
An elongate depression on the sea floor that is wider and shallower than a trench. Also known as submarine trench.
The line connecting the lowest points of a fold.
(meteorology)
An elongated area of relatively low atmospheric pressure; the opposite of a ridge.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

trough

A channel used to carry electric conductors.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
WiseGuyReports.com adds "Eave Troughs Market 2019 Global Analysis, Growth, Trends and Opportunities Research Report Forecasting to 2024" reports to its database
Post-partition, the maintenance of the water troughs fell under the purview of the Karachi Metropolitan Corporation (KMC).
Our 12-foot-long WaterMaster trough holds up to 200 gallons and tips up forward by hand for easy cleanout," says Ora Wengerd, Wengerd Machining & Fabricating, Bertha, Minnesota.
The state weather bureau predicts rainshowers and thunderstorms over parts of Luzon and Visayas on Wednesday due to the effects of the 'monsoon trough' over southern Luzon.
I also dug a hole in the soil of each of the troughs and buried a perforated drainage pipe coupled to a section of solid pipe (which stayed above the soil).
It is important to reduce metal losses associated with the slag in the main trough of the blast furnace [2, 3].
Complete hinge fracture was supposed to be related to the lamina displacement into the spinal canal, which might compress the spinal cord or encroach the nerve root causing neurological deterioration.[sup][5] In short, we believed that using the drilling templates could help the surgeon prepare the open-side and hinge-side troughs more safely.
Stone troughs are also now used as a garden feature.
Upper-level troughs tend to directly overlie large, deep cold air masses.
Teknomek, a leading provider of hygienic stainless steel furniture and equipment, has extended and redesigned its range of wash troughs and dispensers.
Materials: four plastic troughs, their fixtures and end caps, four pieces of wood about 5 feet long each, dowels and screws, a ruler, a pencil, a handsaw and a drill.
Another semi-link sees recurrent surface anticyclonic cores making their way in southerly latitudes (+40[degrees]S) pushing both vortex cores and their troughs to the north (Cape coast) with cut-off potential.