firmĭtas (noun F) : firmus
* Firmness, durability, strength (class.; syn.: constantia, firmitudo, perseverantia).
* Lit.: ea, quae ille (Epicurus) propter firmitatem στερέμνια appellat, Cic. N. D. 1, 19, 49: age specta, postes cujusmodi! Quanta firmitate facti, Plaut. Most. 3, 2, 134: materiae, * Caes. B. C. 2, 11, 1: amphorarum,Plin. 35, 12, 46, § 161: Aegyptii lini,id. 19, 1, 2, § 14: fastigiorum templorum,id. 35, 12, 46, § 158: uvae contra frigora, etc.,id. 14, 3, 4, § 40: vini,id. 14, 2, 4, § 21: gladiatoria totius corporis,vigor,Cic. Phil. 2, 25, 63; cf. Quint. 8, 4, 16: corporis,id. 11, 3, 19; 2, 16, 13; Plin. Pan. 4, 7; 15, 1: capitis, lateris pecorisve,Quint. 11, 3, 16; 40: firmitas et vigor vocis,Gell. 2, 3, 4: valetudinis,Plin. 20, 5, 20, § 42. —In plur.: pulvis Puteolanus aedificiis praestat firmitates,Vitr. 2, 6.
* Trop., firmness, steadfastness, stability, endurance, constancy, power: firmitas et constantia,Cic. Fam. 9, 11, 1: animi,id. Sest. 44, 95; id. Att. 12, 38, 3; id. Tusc. 5, 26, 74: sapientis,id. Ac. 2, 20, 66: exercitus numero amplissimus, firmitate exiguus, Planc. in Cic. Fam. 10, 24, 3: ut quisque minimum firmitatis haberet minimumque virium, ita amicitias appetere maxime,Cic. Lael. 13, 46; cf.: ea (amicitia) non satis habet firmitatis,id. ib. 5, 19: si aliquid firmitatis nactus sit Antonius,id. Fam. 11, 12, 1: imperii,Suet. Vesp. 7.

s. TLL