chordoma

noun
chor·​do·​ma | \ kȯr-ˈdō-mə How to pronounce chordoma (audio) \
plural chordomas also chordomata\ -​mət-​ə How to pronounce chordomata (audio) \

Medical Definition of chordoma

: a malignant tumor that is derived from remnants of the embryonic notochord and occurs along the spine attacking especially the bones at the base of the skull or near the coccyx

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