teratological

adjective

1
: abnormal in growth or structure
2
: of or relating to teratology

Word History

Etymology

teratolog(y) + -ical

First Known Use

1857, in the meaning defined at sense 1

Time Traveler
The first known use of teratological was in 1857

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Cite this Entry

“Teratological.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/teratological. Accessed 8 Jul. 2026.

Medical Definition

teratological

adjective
1
: abnormal in growth or structure
2
: of or relating to teratology

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