Biopsy
Etymology
From Greek “bios” (life) and “opsis” (sight) — literally “viewing the living.” The term was coined in 1879 by the French dermatologist Ernest Besnier. The word marks a shift in medicine toward direct cellular evidence, distinguishing the sampling of living tissue from the autopsy, its literal counterpart, which is the “viewing” of the dead.
noun · /BY-op-see/
The removal of a small piece of living tissue so it can be examined under a microscope.
What it names
The step that turns suspicion into knowledge: the moment a doctor stops guessing from the outside and looks directly at the actual cells to see what they are doing.
Example
The scan looked worrying, but the biopsy came back clear, and the lump was just a harmless cyst.
Related idea
A biopsy is the sampling; the diagnosis is the conclusion drawn from what the sample reveals. The two are often confused, but one is a physical procedure and the other is the interpretation that may or may not follow from it.