pumice. n. 1. (Geological Science) Also called: pumice stone a light porous acid volcanic rock having the composition of rhyolite, used for scouring and, in powdered form, as an abrasive and for polishing. vb. 2. (Tools) (tr) to rub or polish with pumice.[C15 pomys, from Old French pomis, from Latin pÅ«mex ].umÂ·ice. n. A light, porous, glassy lava, used in solid form as an abrasive and in powdered form as a polish and an abrasive. tr.v. pumÂ·iced, pumÂ·icÂ·ing, pumÂ·icÂ·es. To clean, polish, or smooth with pumice.
Summary: 1.A neuron is an individual cell, whereas, a group of neurons form a nerve. 2.There are two types of neurons ââ sensory and motor neurons; while there are three types of nerves ââ afferent, efferent and mixed nerves.
The main difference is that motor neurons move signals from the central nervous system to a central organ or point while sensory neurons move signals from the central organ or â¦ point to the central nervous system. sensory neuron is a nerve cell that transmits impulses to the central nervous system (spinal cord or brain). It is information such as taste, touch, hot, cold, sound, sight â¦ or pain. It's cell body is located just outside the central nervous system and has a very short axon which leads into the nervous system.