teratology

noun Biology.

1. the science or study of monstrosities or abnormal formations in organisms.

noun

1. the branch of medical science concerned with the development of physical abnormalities during the fetal or early embryonic stage
2. the branch of biology that is concerned with the structure, development, etc, of monsters
3. a collection of tales about mythical or fantastic creatures, monsters, etc

n.“study of marvels and monsters,” 1670s, from comb. form of Greek teras (genitive teratos) “marvel, monster” + -logy. n.

1. The biological study of malformations and monstrosities.

1. The scientific study of birth defects.