examination of tissues or liquids from the living body to determine the existence or cause of a disease
"The doctor ordered a biopsy to examine tissue samples and confirm whether the lump was cancerous."
The removal and examination of a sample of tissue, cells, or bodily fluid from a living body for diagnostic purposes.
"The doctor scheduled a biopsy to remove a small piece of the lump so they could examine it under a microscope."
To take a sample (a biopsy) for pathological examination.
"The doctor performed a skin biopsy to determine if the mole was cancerous before scheduling surgery."