glio·​blas·​to·​ma ˌglī-ō-ˌbla-ˈstō-mə How to pronounce glioblastoma (audio)
variants or less commonly glioblastoma multiforme
plural glioblastomas also glioblastomata ˌglī-ō-ˌbla-ˈstō-mə-tə How to pronounce glioblastoma (audio) or glioblastomas multiforme or glioblastoma multiformes
: a malignant rapidly growing astrocytoma of the central nervous system and usually of a cerebral hemisphere

Examples of glioblastoma in a Sentence

Recent Examples on the Web In January 2014, Keeler was diagnosed with stage 4 glioblastoma, an aggressive form of brain cancer which can kill patients within months. Adam Carlson, Peoplemag, 11 June 2024 The night was special for many reasons, the first of which being that the event raised over $50,000 for cancer research of glioblastoma malignant brain tumors, the type of cancer that stole Atwater’s life at the young age of 40. Armstrong Williams, Baltimore Sun, 6 Mar. 2024 The 54-year-old was diagnosed with glioblastoma at the end of 2022 and is currently undergoing treatment Author Sophie Kinsella revealed she was diagnosed with an aggressive brain cancer. Vanessa Etienne, Peoplemag, 17 Apr. 2024 That’s a dramatic result in glioblastoma multiforme, or GBM, an aggressive brain cancer that has eluded effective treatments for decades. Damian Garde Reprints, STAT, 14 Mar. 2024 See all Example Sentences for glioblastoma 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'glioblastoma.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


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

First Known Use

circa 1923, in the meaning defined above

Time Traveler
The first known use of glioblastoma was circa 1923

Dictionary Entries Near glioblastoma

Cite this Entry

“Glioblastoma.” Dictionary, Merriam-Webster, Accessed 16 Jul. 2024.

Medical Definition


glio·​blas·​to·​ma ˌglī-(ˌ)ō-bla-ˈstō-mə How to pronounce glioblastoma (audio)
plural glioblastomas also glioblastomata -mət-ə How to pronounce glioblastoma (audio)
: a malignant rapidly growing astrocytoma of the central nervous system and usually of a cerebral hemisphere
Glioblastoma is the worst grade of malignant glioma, a relatively uncommon but deadly class of brain tumors that kills 97% of those diagnosed within 5 years.Greg Miller, Science

called also glioblastoma multiforme

Last Updated: - Updated example sentences
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