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Webster 1913 Edition

Noun.

The act of leaping on anything.

[Obs.]

Sir T. Browne.

Noun.

[L. super and salio, to leap.]

The act of leaping on any thing. [Little used.]

supersaliency ‎(uncountable)

(obsolete) The act of leaping on anything.
(Can we find and add a quotation of Sir Thomas Browne to this entry?)