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

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.

trough

A channel used to carry electric conductors.
References in periodicals archive ?
The NCREIF index troughed in 2009, and the S&P 500 index troughed in 2008.
Private sector credit growth slowed and troughed in annual terms at -0.
This is roughly where equity market valuations have troughed during the last three recessions.
Data on median house prices show the depth of the recent cycle that peaked in 2006 and troughed in 2009.
Negative sentiment from global investors towards Europe, at its worst in MayEoACAOs survey, appears to have troughed.
However, recovery in Russian production took place after the crises troughed in 1998 and the ruble devalued significantly.
He troughed more grub than Cheryl Cole and Nadine Coyle have scoffed since birth.
The belt is troughed to keep product away from the edge, eliminating the need for side skirts.
According to the Statistics Canada Labour Force Survey, employment has fallen sharply in Thunder Bay but does appear to have troughed.
The only ever-present at Ibrox this term, Whittaker's form has peaked and troughed during the opening four months of an eventful campaign.
Mr Archer said: "The MPC's 9-0 vote in favour of unchanged interest rates at their April meeting and the general tone of the minutes reinforced belief that the view is that interest rates have very likely troughed at 0.