The Collaborative International Dictionary
Ponderance
Ponderance \Pon"der*ance\, n. [L. ponderans, p. pr. of ponderare
to weigh: cf. OF. ponderant of weight.]
Weight; gravity. [R.]
--Gregory.
Douglas Harper's Etymology Dictionary
ponderance
"weight, importance," 1798, from ponder + -ance.
Wiktionary
ponderance
n. weight; gravity