saˈmōmə noun
( plural psammomas -ōməz ; or psammoma·ta -ōməd.ə)
Etymology: New Latin, from psamm- + -oma
: a hard fibrous tumor of the meninges of the brain and spinal cord containing calcareous matter
• psam·moma·tous (ˈ)sa|mōməd.əs, -mäm- adjective