chaff


Also found in: Dictionary, Thesaurus, Medical, Legal, Financial, Idioms, Wikipedia.

chaff

the dry membranous bracts enclosing the flowers of certain composite plants

Chaff

 

the resulting waste products from threshing and cleaning the grains of cereal and leguminous plants. It consists of hulls, bits of spikelets, ground leaves, underweight grains, and the seeds of weeds. The nutritional value of chaff is higher than that of straw. One kg of wheat chaff contains 0.43 feed units and 26 g of digestible protein; 1 kg of rye chaff contains 0.40 feed units and 21 g of digestible protein; and 1 kg of oat chaff contains 0.44 feed units and 23 g of digestible protein.

Chaff may be used in mixtures with succulent feeds, wet mash, molasses, and other slops for fattening cattle, horses, and swine. When grain is harvested by combine, the chaff is mixed with straw and is thus used as feed for animals.

chaff

[chaf]
(agriculture)
Seed coverings and small stem pieces which are separated from grass and grain seeds in threshing or processing.
(ordnance)
Thin, flat pieces of metal foil, plain or backed, designed to act as a countermeasure against enemy radar when released into the atmosphere.

chaff

The general name applied to radar confusion refractors, which consists of thin, narrow, metallic strips of various lengths and frequency responses fired into or dropped through the atmosphere in order to deflect radar signals and so prevent detection by the enemy radar. These radar-reflective particulate matter or dipoles are sized to known or suspected enemy wavelengths. This is the earliest form of electronic warfare. Also known as windows.
References in periodicals archive ?
To learn more about Joel Chafetz and "The Chaff," visit www.
Among the biochars from non-legumes, canola straw biochar had the greatest ameliorating effect, followed by biochars from straws of rice, corn, and wheat, whereas rice chaff biochar had the smallest ameliorating effect.
Large-scale use of cereal chaff as a tempering material in building earth at Jerf el Ahmar
Also positive correlation between fertile tillers with chaff weight, days to heading with days to maturity and 1000 grain weight, days to maturity with 1000 grain weight, plant height with number of seeds per main spike, and 1000 grain weight with harvest index was obtained.
But the problem with existing fiberglass chaff is that it is too big and too easy to detect, asserts Gassman.
A lot of us also have "maintenance" days and duties--when we do the cleaning, spraying, scraping, purging of chaff and creosote from our ducts and internal orifices.
That means your chaff dispenser is NMC until AVIM can repair it.
If Welch is such a great chaff separator, what are his sources for this statement?
Yet, it is getting harder to sift the wheat from the chaff and grab the information we need.
During OIF, the DC-130A was deployed to a forward operating location where it was used to launch BQM-34 Firebee target drones near Baghdad, Iraq, dropping radar-jamming chaff and decoys to draw antiaircraft fire away from coalition strike aircraft.
Mathematicians get so many letters from crackpots claiming to have proved amazing theorems, Graham says, that it would take too much time to separate the wheat from the chaff.
Scots organiser Fiona Chaff said: 'I have personally received 150 calls in the last year from parents wanting to home educate and half are connected to bullying.