noun
or plas·ma·cy·to·ma ˌplazməsīˈtōmə
( plural plasmocyto·mas -məz ; or plasmocytoma·ta -məd.ə)
Etymology: plasmocytoma from New Latin, alteration of plasmacytoma; plasmacytoma from New Latin, from International Scientific Vocabulary plasmacyte + New Latin -oma
: a myeloma composed of plasma cells