bonanza

noun

a rich mass of ore, as found in mining.

a source of great and sudden wealth or luck; a spectacular windfall: The play proved to be a bonanza for its lucky backers.

Origin:
1835–45, Americanism; < Spanish: literally, smooth sea (hence, good luck, rich vein of ore), nasalized variant of Medieval Latin bonacia, equivalent to Latin bon(us) good + (mal)acia calm sea < Greek malakía softness (malak(ós) soft + -ia -ia)

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Link To Bonanza

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Bonanza is always a great word to know.

So is bezoar. Does it mean:

a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.

an extraordinary or unusual thing, person, or event; an exceptional example or instance.

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Collins

World English Dictionary

bonanza (bəˈnænzə)

—n
1.	a source, usually sudden and unexpected, of luck or wealth
2.	(US), (Canadian) a mine or vein rich in ore

[C19: from Spanish, literally: calm sea, hence, good luck, from Medieval Latin bonacia, from Latin bonus good + malacia dead calm, from Greek malakia softness]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline

Word Origin & History

bonanza

1844, Amer.Eng., from Sp. bonanza "a rich lode," originally "fair weather at sea, prosperity," from V.L. *bonacia, from L. bonus "good" (see bene-).

Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences

Clearly they are a bonanza for consumers, who have been eagerly funneling spare

cash into them.

Car companies that didn't cash in on the preceding bonanza are now focusing on

putting money into their testing facilities.

The state's oil boom is no guaranteed bonanza for higher education.

The commodity bonanza won't last forever, so now is the time to fix these