terato-, terata-, terat-, tera-
(Greek > Latin: marvel, omen, monster; malformation)
The metric symbol for tera- is T.
According to the Academic Press Dictionary of Science and Technology, Harcourt Brace Jovanovich, Publishers, 1992: "Tera- comes "from a Greek term meaning ‘marvel' or 'monster,' with the sense that this is a huge and marvelous quantity."
It would make much more sense to have this metric unit (tera) based on tetra- from Greek for "four" then to have terato-, "monster"; which has no relative etymological connection with this or any metric unit.
2. Shaped like a monster.
2. The worship of monstrosities; such as, the Egyptian goddess Hathor (represented as a woman's body with a cow's head), Bubashtis (as a woman with the head of a cat or lioness), and Thoth (who had the body of a man and the head of an ibis).
2. An environmental agent that can cause abnormalities in a developing organism resulting in either fetal death or congenital abnormality.
Normally a human fetus is separated from the mother by the placental barrier, but if the barrier is imperfect and permits a number of chemical and infectious agents to pass to the fetus, then abnormalities may result.
2. Referring to that division of embryology and pathology that deals with abnormal development and congenital bodily malformations.
3. Used in biology to denote the study and science of malformations and abnormal growths in animals and plants.
4. Descriptive of the study of monstrosities or abnormal formations in animals or plants; involving monstrosity, monstrous.
2. A tumour, especially of the gonads, characteristically formed of numerous distinct tissues and believed usually to arise from germ cells or their precursors.
2. An abnormal fear of deformed people including pregnant women.
2. Divination via the use of monstrosities.