plummet

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plummet

a lead plumb used by anglers to determine the depth of water

plummet

[′pləm·ət]
(engineering)
A loose-fitting metal plug in a tapered rotameter tube which moves upward (or downward) with an increase (or decrease) in fluid flow rate upward through the tube. Also known as float.

plumb bob, plummet

A shaped metal weight which is suspended from the lower end of a line to determine the vertical. (See illustration p. 744.)
References in periodicals archive ?
Data from analysts IRI Retail Advantage shows that value sales for pre-packed bacon plummeted 17 per cent in the week after the WHO's International Agency for Research on Cancer published a report last month concluding that processed meat was a carcinogen.
Heather Grant, employment lawyer at Liverpool law firm Maxwell Hodge said: "Tribunal claims have plummeted in this region and nationally and this can be put at the door of recent changes where employees have to pay fees to pursue a tribunal claim.
Theatre-goer Khalil Anjarwalla said he, his wife and her parents escaped from the theatre safely after "kilos of concrete plummeted from the ceiling".
Summary: A hot air balloon lost control and plummeted to the ground killing both occupants.
Fine Gael have plummeted three per cent to 30 while Labour has also fallen two per cent to 22.
Summary: Rabat (MAP) - The production price index of manufacturing and mining industries equally plummeted in December 2009 by 0.
ADPnews) - Oct 15, 2009 - Belgian PVC profile maker Deceuninck (EBR:DECB) today said its third-quarter sales plummeted by 21.
Summary: Australia's June Retail Sales figure unexpectedly plummeted 1.
Falling oil prices meant Algeria's exports plummeted 42.
After just three months of the youth group working alongside Police Community Support Officers in Gilfach Goch, complaints about anti-social behaviour and crime in general plummeted by 42%.
TYNESIDE housebuilder Bellway's sales have plummeted by 38%, despite a string of initiatives to tempt buyers.
PLUMMET--The price of an OPEC barrel has now plummeted $100 from its peak on July 3.