Pneū'ma-tŏl'ō-gy, n.

n. [Fr. pneumatologie, It. pneumatologia, Sp. neumatologia, from Gr. πνεῦμα, air, spirit, and λόγος, discourse.]

1. The doctrine of, or a treatise on, air and other elastic fluids.
2. (Philos. & Theol.) The doctrine of, or a treatise on, pneumatics.