Something or someone that depresses or presses down; in anatomy, a muscle that pulls a body part downward.
From Latin 'deprimere' (to press down) + '-or' (agent suffix meaning 'one who does'). Medical terminology borrowed directly from Latin structure.
Your depressor muscles pull your jaw down and your shoulders down—they're literally the opposite of your levator muscles—and it's a perfect example of how anatomy uses old Latin names for simple mechanical functions.
Complete word intelligence in one call. Free tier — 50 lookups/day.