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Dictionary · Word part

terat/o

A word root that means a malformation; literally, "monster."

TAIR-uh-toe root

What it means

The root in words about birth defects and abnormal growths. A teratogentuh-RAT-uh-jenAnything a pregnant person is exposed to that can cause birth defects in the developing baby.terat/o malformation-gen producingFull entry is something, such as a drug, infection or radiation, that can cause birth defects, and a teratoma is a tumor that can contain hair, teeth or other tissues.

At a glance

Also writtenterato-

Related terms

teratogen

Anything a pregnant person is exposed to that can cause birth defects in the developing baby.

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