embryotoxon
noun
em·bryo·tox·on
-ˈtäk-ˌsän, -sən 
: a congenital defect of the eye characterized by an opaque ring around the margin of the cornea
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“Embryotoxon.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/embryotoxon. Accessed 21 Jul. 2025.
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