energy
Definitions
General English
- noun the force or strength of a person
- noun a power which makes something work
- noun the fifth letter of the alphabet, between D and F
General Science
- noun electricity or other fuel
- abbreviation exponential constant 2.71828… which is defined by the equation e = exp (I)
- symbol the charge on an electron equal to 1.60219 x 10-19 coulombs
Agriculture
Aviation
- noun the ability of a physical system to do work
- noun power from electricity, petrol, heat, etc.
Banking
- noun power produced from electricity, petrol or a similar source
Cars & Driving
- noun the capacity for doing work, measured in joules or in the case of electrical energy, in kilowatt-hours
Electronics
- The capacity to do work. Energy cannot be created nor destroyed in an isolated system, but it can be changed from one form to another. Forms of energy include electrical, chemical, acoustic, atomic, and solar. Usually expressed in joules, but other units may be utilized, such as ergs, calories, or watt-hours.
- symbolE
- A prefix which serves to produce derivative words pertaining to computer, and/or online concepts. For instance, email, or e-cash. It is an abbreviation of electronic.
- A transcendental number equal to approximately 2.71828, and which is the base for natural logarithms. Also called Napierian base.
- symbol for electric field strength, or electric field vector.
Computing
- symbol the hexadecimal number equivalent to decimal number 14
Construction
- The rating of elasticity or stiffness of a material.
Slang
- noun (a dose of) the drug ecstasy. An abbreviation in vogue in the UK since the late 1980s.
Origin & History of “energy”
Energy comes ultimately from Greek érgon ‘deed, work’. this was a descendant of Indo-European *wergon, which also produced English work, liturgy, organ, and orgy. Addition of the prefix en- ‘at’ produced the adjective energḗs or energōs ‘at work’, hence ‘active’, which Aristotle used in his Rhetoric as the basis of a noun enérgeia, signifying a metaphor which conjured up an image of something moving or being active. This later came to mean ‘forceful expression’, or more broadly still ‘activity, operation’. English acquired the word via late Latin energīa.
