Having valves or valve-like structures that are equal in size, function, or arrangement.
From 'equi-' (equal) plus 'valvular' (relating to valves), from Latin 'valvula' (small valve). Used in anatomy, cardiology, and biology.
Doctors use this when describing healthy heart valves that open and close symmetrically—if your valves become inequivalvular, it's a warning sign of cardiac disease, making this a word that can literally save your life.
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