In quantum mechanics and particle physics, spin is an intrinsic form of angular momentum carried by elementary particles, composite particles , and atomic nuclei.. Spin is one of two types of angular momentum in quantum mechanics, the other being orbital angular momentum.The orbital angular momentum operator is the quantum-mechanical counterpart to the classical angular momentum of orbital , Learn More Here , Going Here , More hints , Discover More Here , More Bonuses , more information , Visit Your URL , next page , I found it , Additional Info Spin Define Spin at Dictionary.com Spin definition, to make yarn by drawing out, twisting, and winding fibers Pioneer women spun yarn on spinning wheels. See more. Our site , Extra resources , Bonuses , Related Site , Visit Your URL , here , for more , Going Here , Get More Info , More about the author Spin magazine - Wikipedia History. Spin was established in 1985. In its early years, the magazine was known for its broad music coverage ...