Etymology
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preponderance (n.)

1680s, "greater heaviness, fact of exceeding in weight," from Latin praeponderans, present participle of praeponderare "make heavier" (see preponderate). Sense of "greater importance" is from 1780; that of "greater number" is from 1845. Related: Preponderancy.

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Definitions of preponderance

preponderance (n.)
superiority in power or influence;
the preponderance of good over evil
the preponderance of wealth and power
preponderance (n.)
a superiority in numbers or amount;
a preponderance of evidence against the defendant
Synonyms: prevalence
preponderance (n.)
exceeding in heaviness; having greater weight;
the least preponderance in either pan will unbalance the scale
From wordnet.princeton.edu