What is the full Latin title of Isaac Newton's magnum opus?

The full Latin title of Isaac Newton’s magnum opus is Philosophiæ Naturalis Principia Mathematica, usually shortened to the Principia. Its English meaning is The Mathematical Principles of Natural Philosophy.

The work presents Newton’s laws of motion and his law of universal gravitation. Written in Neo-Latin, it was published in 1687 in three books. Newton used the language and geometric style of classical mathematical physics, even though the underlying ideas drew heavily on his developing methods of calculus.

The Principia was not simply a book about gravity. It offered a general mathematical framework for explaining motion, including the motion of projectiles, orbiting bodies, and the planets. Edmond Halley played a crucial role in encouraging Newton to complete and publish it, and he helped finance the first edition.

The distractors are also associated with Newton, but they are separate works or subjects: Opticks concerns light, Method of Fluxions concerns calculus, and Arithmetica Universalis is a mathematical text.