Lewis Short
applĭcātĭo | adp- (noun F) : (), , id. (only in Cic.).
* A joining or attaching one's self to; hence, trop., an inclining to, inclination: adplicatio animi,Cic. Lael. 8, 27.
* Judic. t. t., a placing of one's self under the protection of a superior, clientship: jus applicationis,the right of inheriting the effects of such a client,Cic. de Or. 1, 39, 177 (cf. applico, I. B. 2.).
Charlton T. Lewis, Charles Short, A Latin Dictionary