poten-, pot-, poss-, -potent, -potence, -potency, -potential +

(Latin: power, strength, ability, able; having authority over; rule over, command of)

potentially
1. With a possibility of becoming actual or a reality.
2. Possibly but not yet actually: "He provided potentially useful information."
3. The inherent ability or capacity for growth, development, or coming into being.
potentiometer
An instrument that measures electromotive force or potential difference by comparing a part of the voltage to be measured against a known electromotive force.
potentiometer
1. An instrument for measuring an unknown voltage by comparison to a standard voltage.
2. A three-terminal resistor with an adjustable center connection, widely used for volume control in radio and television receivers.
potestate
A chief ruler; a potentate.
power
1. The ability, strength, and capacity to do something.
2. Physical force or strength.
3. Control and influence over other people and their actions.
4. The political control of a country, exercised by its government or leader.
5. The authority to act or to do something according to a law or rule.
6. A politically, financially, or socially powerful person.
7. A country that has military or economic resources and is considered to have political influence over other countries.
8. The ability to influence people's judgments or emotions.
9. A measure of the rate of doing work or transferring energy, usually expressed in terms of wattage or horsepower.
10. Run by electricity or fuel; such as, a motor using electrical energy or fuel instead of relying on manual labor.
11. Etymology: from Anglo-French pouair, Old French povoir, noun use of the infinitive in Old French, "to be able" from earlier podir, from Latin potis, "powerful".
power coefficient
A measure of the technical efficiency with which a wind turbine converts wind energy to electricity, expressed as the power produced by the rotating turbine as a percentage of the total energy of the wind passing through the area of rotation.

It does not necessarily follow that the higher the coefficient the better because above a certain wind speed, excess energy must be wasted to avoid undue stress on the system.

power density
The amount of energy harnessed, transformed, or used per unit area per unit of time.
power pool
An association of two or more interconnected electric systems having an agreement to coordinate operations and planning.
powerful
1. Able to exert a lot of influence and control over people and events; such as, a powerful nation.
2. Having or exerting great physical or mental strength.
powerless
Lacking power, strength, or effectiveness; helpless.
powertrain
All the moving parts that connect an engine to the point at which work is accomplished.

Specifically, the interconnected set of components driving the wheels to propel a motor vehicle, including the engine, transmission, drive shaft, and differential.

prepossess (verb), prepossesses; prepossessed; prepossessing
1. To preoccupy the mind to the exclusion of other thoughts or feelings.
2. To influence beforehand against or in favor of someone or something; prejudice.
3. To impress favorably in advance or beforehand.
prepossession (s) (noun), prepossessions (pl)
1. The state of being preoccupied with thoughts, opinions, or feelings.
2. An opinion formed beforehand without adequate evidence.
prepotence
prepotent
1. Greater in power, influence, or force than another or others; predominant.
2. Great influence; superiority.
3. Preferential fertilization of a flower by pollen from another flower, rather than its own.

Cross references of word families related directly, or indirectly, to: "master, lead, leading, ruler, ruling, govern": -agogic; agon-; arch-; -crat; dom-; gov-; magist-; regi-; tyran-.