hypŏthēca, ae, f., = ὑποθήκη,
I a pledge , security (esp. of immovable things; whereas pignus is used of movable things; cf. also: arra, arrabo), a mortgage , Just. Inst. 4, 6, § 7; Dig. 13, 7, 9; 20, 1, 2 et saep. (in Cic. Fam. 13, 56, 2, written as Greek).
II —Hence, hypŏthēcārĭus , a, um, adj. [hypotheca], of or relating to a mortgage : actio, Dig. 20, 4, 1 fin. : creditor, id. 42, 7, 1.