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Denotation vs. Connotation

fertilizer

[fur-tl-ahy-zer] /ˈfɜr tlˌaɪ zər/
noun
1.
any substance used to fertilize the soil, especially a commercial or chemical manure.
2.
a person, insect, etc., that fertilizes an animal or plant:
Bees are fertilizers of flowers.
Origin of fertilizer
1655-1665
1655-65; fertilize + -er1
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Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for fertilizer

fertilizer

/ˈfɜːtɪˌlaɪzə/
noun
1.
any substance, such as manure or a mixture of nitrates, added to soil or water to increase its productivity
2.
an object or organism such as an insect that fertilizes an animal or plant
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for fertilizer
n.

1660s, "a person who fertilizes," agent noun from fertilize. As a euphemism for "manure," from 1846.

Online Etymology Dictionary, © 2010 Douglas Harper
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fertilizer in Science
fertilizer
  (fûr'tl-ī'zər)   
Any of a large number of natural and synthetic materials, including manure and compounds containing nitrogen, phosphorus, and potassium, spread on or worked into soil to increase its capacity to support plant growth. Synthetic fertilizers can greatly increase the productivity of soil but have high energy costs, since fossil fuels are required as a source of hydrogen, which is necessary to fix nitrogen in ammonia.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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22
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