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physics

phys·ics [ fízziks ]


noun 
Definition:
 
study of physical forces and qualities: the scientific study of matter, energy, force, and motion, and the way they relate to each other. Physics traditionally incorporates mechanics, electromagnetism, optics, and thermodynamics and now includes modern disciplines such as quantum mechanics, relativity, and nuclear physics. ( takes a singular verb )



plural noun 
Definition:
 
physical aspects: the physical processes, interactions, qualities, properties, or behavior of something ( takes a plural verb )

[15th century. <physic; translation of Latin physica (plural) < Greek phusika, plural of phusikos "of nature" < phusis "nature" < phuein "make grow"]
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