Căt'a-păsm, n.

n. [Gr. κατάπασμα, from καταπάσσειν, to besprinkle, from κατά, down, utterly, and πάσσειν, to strew, or sprinkle.] (Med.) A dry powder compounded of several ingredients, employed by the ancients to sprinkle on ulcers, to absorb perspiration, &c. Dunglison.