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proptosis vs. exophthalmos

proptosis

[prop-toh-sis] / prɒpˈtoʊ sɪs /

noun

Pathology.

exophthalmos

[ek-sof-thal-muhs, -mos] / ˌɛk sɒfˈθæl məs, -mɒs /

Also exophthalmus

Pathology.

protrusion of the eyeball from the orbit, caused by disease, especially hyperthyroidism, or injury.