What does subsignātĭo mean in Latin?

subsignātĭo, a noun, means “a subscription”.

noun

subsignātĭo

subsignātĭo, ōnis, f. subsigno,

I. a subscription, signature. *

I. Lit.: veteres subsignationis verbo pro subscriptione uti solebant, Dig. 50, 16, 39.—*

II. Trop., a firm promise, assurance: poenitentiae, Tert. Poen. 2 med.

What does subsignātĭo mean in Latin?: subsignātĭo, a noun, means “a subscription”.