os·​te·​o·​ma | \ ˌä-stē-ˈō-mə How to pronounce osteoma (audio) \
plural osteomas also osteomata\ ˌä-​stē-​ˈō-​mə-​tə How to pronounce osteomata (audio) \

Definition of osteoma

: a benign tumor composed of bone tissue

Examples of osteoma in a Sentence

Recent Examples on the Web The pneumatocele’s likely cause, an MRI would show, was an osteoma, or benign bone tumor, that had formed in the man’s sinus and was eroding through the base of the skull, Brown said. Amy B Wang, miamiherald, "Man has nothing but air where part of his brain should be, puzzled doctor discover | Miami Herald," 13 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'osteoma.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of osteoma

1846, in the meaning defined above

History and Etymology for osteoma

New Latin

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The first known use of osteoma was in 1846

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Cite this Entry

“Osteoma.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/osteoma. Accessed 12 Jul. 2020.

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More Definitions for osteoma


os·​te·​o·​ma | \ ˌäs-tē-ˈō-mə How to pronounce osteoma (audio) \
plural osteomas also osteomata\ -​mət-​ə How to pronounce osteomata (audio) \

Medical Definition of osteoma

: a benign tumor composed of bone tissue

More from Merriam-Webster on osteoma

Britannica.com: Encyclopedia article about osteoma

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