Pathol. [mod.L., a. Gr. ἐκχύμωμα; see next.] A tumor formed by an effusion of blood under the skin.
1541. R. Copland, Guydons Quest. Chirurg., 2 H iij. Such rupcyons be with ecchymosis or ecchymonia [sic].
1684. trans. Bonets Merc. Compit., V. 139/1. When the Ecchymoma was just turning to an Abscess, I opened it.
1876. Duhring, Dis. Skin, 329. Ecchymomata consist of extensive extravasations, which appear in the form of tumors.