rigiditas
From LSJ
λίγεια μινύρεται θαμίζουσα μάλιστ' ἀηδών → the sweet-voiced nightingale mourns constantly, the sweet-voiced nightingale most loves to warble
λίγεια μινύρεται θαμίζουσα μάλιστ' ἀηδών → the sweet-voiced nightingale mourns constantly, the sweet-voiced nightingale most loves to warble
rĭgĭdĭtas: ātis, f. rigidus,
I stiffness, hardness of wood, Vitr. 2, 9.
rĭgĭdĭtās, ātis, f., rigidité, inflexibilité [du bois]: Vitr. Arch. 2, 9, 9.