Emily Dickinson Lexicon

PHYS'ICS, n. [s as z.]

1. In its most extensive sense, the science of nature or of natural objects, comprehending the study or knowledge of whatever exists.
2. In the usual and more limited sense, the science of the material system, including natural history and philosophy. This science is of vast extent, comprehending whatever can be discovered of the nature and properties of bodies, their causes, effects, affections, operations, phenomena and laws.