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Webster 1913 Edition
Brontology
Bron-tol′o-gy
,Noun.
 [Gr. [GREEK] thunder + 
-logy
.] A treatise upon thunder. 
Webster 1828 Edition
Brontology
BRONTOL'OGY
,Noun.
  A discourse or dissertation upon thunder, containing an explanation of its causes and phenomena.