plural of derisiveness

(singular only) A particular operator that, when applied to a function f yields a function x↦(f(x))/(f'(x))-3/2((f(x))/(f'(x)))² / (countable) Any image of that operator.

In a deriding way; mockingly.

prediction market

(dated, late 1800s) Alternative spelling of derringer

A surname from German.

(dated, 1800s) Alternative form of derringer

(transitive) To remove the risk from; to make safe.

(zoology) Any eel in the family Derichthyidae.

plural of derichthyid