noun.
A malignant tumor arising from connective tissues.
The Century Dictionary and Cyclopedia
noun.
In botany, a fleshy disk.
noun.
In pathology, a tumor composed of tissue resembling embryonic connective tissue. The sarcomas are of varying, usually high, grades of malignancy.
the GNU version of the Collaborative International Dictionary of English
noun.
A tumor of fleshy consistence; -- formerly applied to many varieties of tumor, now restricted to a variety of malignant growth made up of cells resembling those of fetal development without any proper intercellular substance.