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[ret-noh-bla-stoh-muh] /ˌrɛt noʊ blæˈstoʊ mə/
noun, plural retinoblastomas, retinoblastomata
[ret-noh-bla-stoh-muh-tuh] /ˌrɛt noʊ blæˈstoʊ mə tə/ (Show IPA)
Pathology. an inheritable tumor of the eye.
Origin of retinoblastoma
First recorded in 1920-25; retin(a) + -o- + blastoma Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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retinoblastoma in Medicine

retinoblastoma ret·i·no·blas·to·ma (rět'n-ō-blā-stō'mə)
n. pl. ret·i·no·blas·to·mas or ret·i·no·blas·to·ma·ta (-mə-tə)
A hereditary malignant tumor of the retina, transmitted as a dominant trait and occurring chiefly among infants.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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