Metaphysics
a term popularly employed to denote a science dealing with subjects incapable of being dealt with by physical research.
METAURUS (-tâ'-), a river of central Italy, still called the Metauro, emptying into the Adriatic near Fano. On its banks the Romans defeated the Carthaginians under Hasdrubal in 207 B. C. METAYER (-tā'yur), one who cultivates the soil under an arrangement with his landlord, not paying a fixed rent, either in money or in kind, but a certain proportion of the produce, the landlord furnishing the whole or part of the stock, tools, etc.
METAZOA (-zō'-), many-celled animals, composed of tissues, originally developed from three cell layers. The group comprises all the higher animals, from sponges to man, and is opposed to the Protozoæ, which are microscopic or one-celled animals.