Lewis Short
concrētĭo (noun F) : concresco.
* Abstr., compacting, uniting, condensing, congealing (opp. liquor), Cic. Univ. 14 init.: individuorum corporum concretio,id. N. D. 1, 25, 71: prava corporis, Firm. Math. 1, 3: substantiarum,Tert. Anim. 52.
* Concr., materiality, matter: (deus) mens soluta quaedam et libera segregata ab omni concretione mortali,Cic. Tusc. 1, 27, 66; cf. Lact. 1, 5.
Charlton T. Lewis, Charles Short, A Latin Dictionary