ppl. a. Obs. rare. [f. vb. *appell (ad. L. appell-ĕre, f. ap- = ad- to + pellĕre to drive) + -ING2.] Driving, pushing or forcing onwards.

1

1666.  G. Harvey, Morb. Angl., x. 116. A glowing heat … excited through the appelling purulent corrosive steams.

2

1693.  Phil. Trans., XVII. 662. Stick there till other appelling Substances give them a farther Comminution.

3