Webster’s Revised Unabridged Dictionary · 1913
Hypotheca
Hy′po·the′ca (hī′pō·thē′kȧ), n. [L., fr. Gr. ὑποθήκη a thing subject to some obligation, fr. ὑποτιθέναι to put under, put down, pledge. See Hypothesis.] (Rom. Law) An obligation by which property of a debtor was made over to his creditor in security of his debt.
☞ It differed from pledge in regard to possession of the property subject to the obligation; pledge requiring, simple hypotheca not requiring, possession of it by the creditor. The modern mortgage corresponds very closely with it. Kent.