Definition of psammoma in English:

psammoma

Pronunciation /(p)səˈməʊmə/

noun

rare Pathology
  • A tumour, especially a meningioma, containing rounded, laminated, calcified concretions resembling grains of sand.

Origin

Late 19th century; earliest use found in The Lancet. From German Psammoma from ancient Greek ψάμμος sand + German -oma.