ppl. a. Obs. rare. [f. vb. *appell (ad. L. appell-ĕre, f. ap- = ad- to + pellĕre to drive) + -ING2.] Driving, pushing or forcing onwards.
1666. G. Harvey, Morb. Angl., x. 116. A glowing heat excited through the appelling purulent corrosive steams.
1693. Phil. Trans., XVII. 662. Stick there till other appelling Substances give them a farther Comminution.