Noun
The doctrine of, or a treatise on, air and other elastic fluids. See Pneumatics, 1.
The science of spiritual being or phenomena of any description.
Source: Webster's dictionaryMost important of all, he was instrumental in the association in the West of pneumatology and ecclesiology, a new development. Source: Internet
Pope Hadrian rejected those accusations and tried to explain to the Frankish king that pneumatology of Tarasios was in accordance with the teachings of the holy Fathers. Source: Internet