- properSuited or acceptable to the purpose or circumstances; fit, suitable.
- presbypropriaInability of the proprioceptive system to accurately interpret actual limb position or movement due to physiological aging.
- proper leftThe direction which is to the left from an object's perspective, the direction 90 degrees counter-clockwise from the front.
- proper motionThe change in apparent position of a celestial body due to that body's velocity relative to the Sun.
- proper rightThe direction which is to the right from an object's perspective, the direction 90 degrees clockwise from the front.
- propriospinalRelating specifically to the spine, and especially to those structures that connect segments of the spine