Breeds This is a simplified guide to guinea pig breeds for pet owners, and does not explain the various breed standards accepted for showing purposes (most cavy clubs have websites where you can find this information).mooth Recommended for: New owners The Smooth breed of guinea pig is by far the most common type of guinea pig you will see in pet shops, and is the classic image of what a guinea pig should look like in most people's minds.
Sir Isaac. 1642â1727, English mathematician, physicist, astronomer, and philosopher, noted particularly for his law of gravitation, his three laws of motion, his theory that light is composed of corpuscles, and his development of calculus independently of Leibnitz.
Wiktionary(2.00 / 1 vote)Rate this definition: 1  newton(Noun) In the International System of Units, the derived unit of force; the force required to accelerate a mass of one kilogram by one metre per second per second. 2  Newton(ProperNoun) The name of many English places.