retinoblastoma

noun

ret·​i·​no·​blas·​to·​ma ˌre-tə-nō-ˌbla-ˈstō-mə 

plural retinoblastomas also retinoblastomata ˌre-tə-nō-ˌbla-ˈstō-mə-tə 

: a malignant tumor of the retina that develops during childhood, is derived from retinal germ cells, and is associated with a chromosomal abnormality

Examples of retinoblastoma in a Sentence

Recent Examples on the Web

Rowan Olson recently rang the bell at the Children's Hospital Los Angeles (CHLA) to mark the end of his treatment after being diagnosed with retinoblastoma — the same cancer his own father was diagnosed with and lost his vision to, according to Fox 11 Los Angeles. —Kimberlee Speakman, PEOPLE, 12 Apr. 2026

The team is now collaborating with clinicians at Lausanne University Hospital and Jules Gonin Eye Hospital to adapt MagFlow for retinoblastoma therapy. —Neetika Walter, Interesting Engineering, 27 Oct. 2025

At this point, there were concerns Noah could have retinoblastoma, a rare type of cancer affecting the retina. —Jack Beresford, MSNBC Newsweek, 28 June 2025

This is why pediatricians developed standard screening for retinoblastoma starting at birth. —Dayna Copeland, The Mercury News, 15 Mar. 2025

Word History

Etymology

New Latin, from retin- + blast- + -oma

First Known Use

1924, in the meaning defined above

Rhymes for retinoblastoma

• cholesteatoma
• epithelioma
• lymphogranuloma
• medulloblastoma
• mesothelioma
• adenocarcinoma
• choriocarcinoma
• pheochromocytoma
• ambystoma
• atheroma
• carcinoma
• coloboma

Medical Definition

retinoblastoma

noun

ret·​i·​no·​blas·​to·​ma ˌret-ᵊn-ō-ˌblas-ˈtō-mə 

plural retinoblastomas also retinoblastomata -mət-ə 

: a hereditary malignant tumor of the retina that develops during childhood, is derived from retinal germ cells, and is associated with a chromosomal abnormality