(in certain languages, as Latin) a form regularly derived from a verb and functioning as a noun, having in Latin all case forms but the nominative, as Latin dicendī gen., dicendō, dat., abl., etc., “saying.”.
the English -ing form of a verb when functioning as a noun, as writing in Writing is easy.
a form similar to the Latin gerund in meaning or function.
1513, from L.L. gerundium, from Old Latin gerundum "to be carried out," gerundive of gerere "to bear, carry." In L., a verbal noun used for all cases of the infinitive but the nominative; applied in Eng. to verbal nouns in -ing.