rĭgĭdo: āre, v. a. id.,I to harden, make firm (very rare); trop.: (virtus) rigidari quidem, amplius intendi non potest, Sen. Ep. 71, 20.
rĭgĭdō,¹⁶ āre, tr., rendre raide, durcir, raidir : Sen. Ep. 71, 20.