ENERGY

Etymology

From Middle French énergie,

from Late Latin energia,

from Ancient Greek ἐνέργεια (enérgeia, “activity”),

from ἐνεργός (energós, “active”),

from ἐν (en, “in”) + ἔργον (érgon, “work”).

The sense in physics was coined by English polymath Thomas Young in 1802 in his lectures on Natural Philosophy.