TENRIKYŌ. A monotheistic Japanese religion established in 1838, Tenrikyō preaches a doctrine of world renewal and individual salvation. Its founder, Nakayama Miki (1798–1887), received a revelation from Tenri Ō no Mikoto...

Teratogens are substances that produce neurological and physical malformations in developing human fetuses. The word comes from the Greek teras, meaning "malformation" or "monstrosity." Certainly, ever since the first malformed baby was born, people...

Teratology is the study of abnormalities, malformations, monstrosities, and serious deviations from normal growth and development in organisms. The word teratogenesis is derived from the Greek gennan, meaning to produce, and terata, meaning monster. In...

Teratology is the study of serious deviations from normal growth and development in organisms. The word teratogenesis is derived from the Greek gennan, meaning to produce, and terata, meaning monster. In humans, teratology is the study of chemicals,...

In contemporary usage, the term teratology generally refers to disfiguring birth defects or malformations. Another term for this is dysmorphology, meaning "the study of abnormal...