Rational: Erythema is derived from the Greek word erythros, which meaning is red.
Rational: Lipoma (Lipo + oma); Lipo mean lipid and -oma mean tumor.
Rational: Dermatology (Dermato+logy); Dermato mean skin and logy mean study of.
Rational: Carcinoma (Carcino+ oma); Carcino mean malignancy and -oma mean tumor.
Rational: -Itis mean inflammation.
Rational: -osis mean condition of. For example alkalosis mean alkaline condition.
Rational : Pyo mean pus, for example Pyoderma mean pus in skin.
Rational : Pathology (Patho + logy); Patho mean disease and logy mean study of.
Rational: Necro mean dead; Necrosis mean condition of cell death.
Rational: Peri- mean surrounding; Pericardium mean a membrane around heart.