Noun

(en noun)

The person, place or thing from which something (information, goods, etc.) comes or is acquired.

* {{quote-book, year=2006, author=(Edwin Black)

, title=Internal Combustion, chapter=2 citation , passage=More than a mere source of Promethean sustenance to thwart the cold and cook one's meat, wood was quite simply mankind's first industrial and manufacturing fuel.}}

* {{quote-magazine, date=2013-07-06, volume=408, issue=8843, page=68, magazine=(The Economist)

, title= The rise of smart beta , passage=Investors face a quandary. Cash offers a return of virtually zero in many developed countries; government-bond yields may have risen in recent weeks but they are still unattractive. Equities have suffered two big bear markets since 2000 and are wobbling again. It is hardly surprising that pension funds, insurers and endowments are searching for new sources of return.}}

Spring; fountainhead; wellhead; any collection of water on or under the surface of the ground in which a stream originates.

* {{quote-magazine, date=2013-08-16, author= John Vidal

, volume=189, issue=10, page=8, magazine=(The Guardian Weekly) , title= Dams endanger ecology of Himalayas , passage=Most of the Himalayan rivers have been relatively untouched by dams near their sources . Now the two great Asian powers, India and China, are rushing to harness them as they cut through some of the world's deepest valleys.}}

A reporter's informant.

(computing) Source code.

(electronics) The name of one terminal of a field effect transistor (FET).

Noun

(uncountable) A state of progression from one place to another.

(countable) A change of position with respect to time.

* Dr. H. More

This is the great wheel to which the clock owes its motion .

(physics) A change from one place to another.

* 1839 , Denison Olmsted, A Compendium of Astronomy Page 95

Secondly, When a body is once in motion' it will continue to move forever, unless something stops it. When a ball is struck on the surface of the earth, the friction of the earth and the resistance of the air soon stop its ' motion .

(countable) A parliamentary action to propose something.

The motion to amend is now open for discussion.

* Shakespeare

Yes, I agree, and thank you for your motion .

(obsolete) An entertainment or show, especially a puppet show.

* 1644 , (John Milton), Aeropagitica :

when God gave him reason, he gave him freedom to choose, for reason is but choosing; he had bin else a meer artificiall Adam'', such an ''Adam as he is in the motions .

(philosophy) from ; any change. Traditionally of four types: generation and corruption, alteration, augmentation and diminution, and change of place.

* 1662 , , Book II, A Collection of Several Philosophical Writings of Dr. Henry More, p. 53:

"I say, it is no uneven jot, to pass from the more faint and obscure examples of Spermatical'' life to the more considerable effects of ''general Motion'' in ''Minerals'', ''Metalls'', and sundry ''Meteors'', whose easie and rude shapes may have no need of any Principle of Life, or ''Spermatical form'' distinct from the ''Rest'' or ''Motion'' of the particles of the ''Matter ."

Movement of the mind, desires, or passions; mental act, or impulse to any action; internal activity.

* South

Let a good man obey every good motion rising in his heart, knowing that every such motion proceeds from God.

(legal) An application made to a court or judge orally in open court. Its object is to obtain an order or rule directing some act to be done in favor of the applicant.

(music) Change of pitch in successive sounds, whether in the same part or in groups of parts. (Conjunct motion'' is that by single degrees of the scale. ''Contrary motion'' is when parts move in opposite directions. ''Disjunct motion'' is motion by skips. ''Oblique motion'' is when one part is stationary while another moves. ''Similar'' or ''direct motion is when parts move in the same direction.)

* Grove

The independent motions of different parts sounding together constitute counterpoint.

(obsolete) A puppet, or puppet show.

* Beaumont and Fletcher

What motion' s this? the model of Nineveh?