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Wiktionary (0.00 / 0 votes) Rate this definition: pneumatology (Noun) The study of spiritual beings and phenomena, especially the interactions between humans and God. pneumatology (Noun) The study of the Holy Spirit as revealed in Scripture. Origin: ÏÎ½Îµá¿¦Î¼Î± (pneuma), breath, and -logy.
Freebase(0.00 / 0 votes)Rate this definition: Gerontology. Gerontology is the study of the social, psychological and biological aspects of aging. It is distinguished from geriatrics, which is the branch of medicine that studies the diseases of older adults.