noun. any agent that interferes with normal embryonic development: alcohol or thalidomide or X-rays or rubella are examples.
- general agent
- -gen (English)
- -γενής (Ancient Greek (to 1453))
- terato- (English)
- τερας (Ancient Greek (to 1453))
Example sentences of the word teratogen
1. Noun, singular or mass
There is also animal evidence that it has mutagenic properties, meaning it can lead to cancer, and that it is a teratogen, meaning it causes birth defects.