Physics
late 15th century (denoting natural science in general, especially the Aristotelian system): plural of obsolete physic ‘physical (thing’), suggested by Latin physica, Greek phusika ‘natural things’ from phusis ‘nature’.
wiktionary
1580s; from physic (see also -ics), from Middle English phisik, from Old French fisike(“natural science, art of healing”), from Latin physica(“study of nature”), from Ancient Greek φυσική(phusikḗ), feminine singular of φυσικός(phusikós, “natural; physical”), from Ancient Greek φύσις(phúsis, “origin; nature, property”), from Ancient Greek φύω(phúō, “produce; bear; grow”), ultimately from Proto-Indo-European *bʰuH-(“to appear, become, rise up”).
etymonline
physics (n.)
1580s, "natural science, the science of the principles operative in organic nature," from physic in sense of "natural science." Also see -ics. Based on Latin physica (neuter plural), from Greek ta physika, literally "the natural things," title of Aristotle's treatise on nature. The current restricted sense of "science treating of properties of matter and energy" is from 1715.
Before the rise of modern science, physics was usually defined as the science of that which is movable, or the science of natural bodies. It was commonly made to include all natural science. At present, vital phenomena are not considered objects of physics, which is divided into general and applied physics. [Century Dictionary, 1895]
