noun, plural osteomas, osteomata [os-tee-oh-muh-tuh] . Pathology.
a benign tumor composed of osseous tissue.

1840–50; oste- + -oma

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World English Dictionary
osteoma (ˌɒstɪˈəʊmə)
n , pl -mata, -mas
a benign tumour composed of bone or bonelike tissue

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American Heritage
Medical Dictionary

osteoma os·te·o·ma (ŏs'tē-ō'mə)
n. pl. os·te·o·mas or os·te·o·ma·ta (-mə-tə)
A benign tumor composed of bony tissue, often developing on the skull.

The American Heritage® Stedman's Medical Dictionary
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Encyclopedia Britannica


small, often solitary bone tumour found mainly on bones of the skull. Osteomas usually appear in late childhood or young adulthood; they are often asymptomatic. They do not become malignant, and treatment (by excision) is necessary only if the tumour interferes with normal functioning.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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