myelofibrosis

noun

my·​e·​lo·​fi·​bro·​sis ˌmī-ə-lō-fī-ˈbrō-səs How to pronounce myelofibrosis (audio)
: an anemic condition in which bone marrow becomes fibrotic and the liver and spleen usually exhibit a development of blood-cell precursors
myelofibrotic adjective

Examples of myelofibrosis in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Ajax’s lead medicine is a next-generation JAK2 inhibitor currently being evaluated in a Phase 1 study in patients with myelofibrosis. Meghana Keshavan, STAT, 27 Apr. 2026 Ajax’s lead asset is an investigational, once daily, oral Type II JAK2 inhibitor that’s being studied in a Phase 1 trial in patients with the rare blood cancer myelofibrosis who previously were treated with a Type 1 JAK2 inhibitor. Jeff Marks, CNBC, 27 Apr. 2026 The actress announced Altman’s death in February 2021 after he was diagnosed with myelofibrosis, a rare blood cancer. Kimberlee Speakman, PEOPLE, 30 Jan. 2026 Lynda shared Jessica with her late husband, Robert Altman, who died in February 2021 from myelofibrosis, a rare blood cancer. Michelle Lee, People.com, 20 May 2025 See All Example Sentences for myelofibrosis

Word History

Etymology

myelo- + fibrosis

First Known Use

1937, in the meaning defined above

Time Traveler
The first known use of myelofibrosis was in 1937

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Cite this Entry

“Myelofibrosis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/myelofibrosis. Accessed 23 May. 2026.

Medical Definition

myelofibrosis

noun
my·​e·​lo·​fi·​bro·​sis ˌmī-ə-lō-fī-ˈbrō-səs How to pronounce myelofibrosis (audio)
plural myelofibroses -ˌsēz How to pronounce myelofibrosis (audio)
: an anemic condition in which bone marrow becomes fibrotic and the liver and spleen usually exhibit a development of blood-cell precursors
myelofibrotic adjective
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