The definition of a bonanza is a big mineral deposit, an abundance of something desirable or a situation where there is a sudden increase in something desirable.(noun)
An example of a bonanza is when sales suddenly start taking off, greatly increasing the company's profits.
See bonanza in Webster's New World College Dictionary
Origin: Sp, fair weather, prosperity < VL *bonacia, < L bonus, good (see bonus), after malacia, calm at sea (assumed to be < malus, bad) < Gr malakia < malakos, soft, akin to mylē, mill
See bonanza in American Heritage Dictionary 4
Origin: , from Medieval Latin bonacia, calm sea
Origin: , blend of Latin bonus, good; see deu-2 in Indo-European roots
Origin: , and Medieval Latin malacia, calm sea (from Greek malakiā, from malakos, soft; see mel-1 in Indo-European roots).
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