† denerˈvation1Obs.rare. [f. de- I. 1 + L. nervus string, etc., as if f. a verb *dēnervāre to tie down with a string.] A marking or groove, such as is produced by a string tied round. 1657Tomlinson Renou's Disp. 469 Worms..are like oblong fibres whose parts are not discriminated, save by some..denervations.