An Encylopedia Britannica Company

tumor

1 ENTRIES FOUND:
tumor (US) noun
or British tumour /ˈtuːmɚ/ Brit /ˈtjuːmə/
plural tumors
tumor (US)
noun
or British tumour /ˈtuːmɚ/ Brit /ˈtjuːmə/
plural tumors
Britannica Dictionary definition of TUMOR
[count]
: a mass of tissue found in or on the body that is made up of abnormal cells