D / dūrāmentum
noun

dūrāmentum

gen. dūrāmenti · gender neuter · decl. 2nd
a hardening
a hardening in concreto.
a hardened; ligneous vine-branch
Lit., a hardened, i. e. ligneous vine-branch, Col. 4, 21, 1; Plin. 17, 23, 35, § 208; Pall. Febr. 12, 1.—Called also duramen, Col. 4, 22, 1.—
a means of hardening by extension
Transf., a means of hardening, stimulus: humanae imbecillitatis efficacissimum duramentum est necessitas, Val. Max. 2, 7, 10.—
firmness figuratively
Trop., firmness (with robur), Sen. Tranq. An. 1.