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amplitude

 - 9 dictionary results
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am⋅pli⋅tude

  [am-pli-tood, -tyood]
Use amplitude in a Sentence
–noun
1. the state or quality of being ample, esp. as to breadth or width; largeness; greatness of extent.
2. large or full measure; abundance; copiousness.
3. mental range, scope, or capacity.
4. Physics. the absolute value of the maximum displacement from a zero value during one period of an oscillation.
5. Electricity. the maximum deviation of an alternating current from its average value.
6. Astronomy. the arc of the horizon measured from the east or west point to the point where a vertical circle through a heavenly body would intersect the horizon.
7. Mathematics. argument (def. 8b).
Origin:
1540–50; < L amplitūdō. See ample, -i-, -tude
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ar⋅gu⋅ment

  [ahr-gyuh-muhnt]
–noun
1. an oral disagreement; verbal opposition; contention; altercation: a violent argument.
2. a discussion involving differing points of view; debate: They were deeply involved in an argument about inflation.
3. a process of reasoning; series of reasons: I couldn't follow his argument.
4. a statement, reason, or fact for or against a point: This is a strong argument in favor of her theory.
5. an address or composition intended to convince or persuade; persuasive discourse.
6. subject matter; theme: The central argument of his paper was presented clearly.
7. an abstract or summary of the major points in a work of prose or poetry, or of sections of such a work.
8. Mathematics.
a. an independent variable of a function.
b. Also called amplitude. the angle made by a given vector with the reference axis.
c. the angle corresponding to a point representing a given complex number in polar coordinates. Compare principal argument.
9. Computers. a variable in a program, to which a value will be assigned when the program is run: often given in parentheses following a function name and used to calculate the function.
10. Obsolete.
a. evidence or proof.
b. a matter of contention.
Origin:
1325–75; ME (< OF) < L argūmentum. See argue, -ment

Synonyms:
1. Argument, controversy, dispute imply the expression of opinions for and against some idea. An argument usually arises from a disagreement between two persons, each of whom advances facts supporting his or her own point of view. A controversy or a dispute may involve two or more persons. A dispute is an oral contention, usually brief, and often of a heated, angry, or undignified character: a violent dispute over a purchase. A controversy is an oral or written expression of contrary opinions, and may be dignified and of some duration: a political controversy.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To amplitude
am·pli·tude   (ām'plĭ-tōōd', -tyōōd')   
n.  

  1. Greatness of size; magnitude.

  2. Fullness; copiousness.

  3. Breadth or range, as of intelligence.

  4. Astronomy The angular distance along the horizon from true east or west to the intersection of the vertical circle of a celestial body with the horizon.

  5. Physics The maximum absolute value of a periodically varying quantity.

  6. Mathematics

    1. The maximum absolute value of a periodic curve measured along its vertical axis.

    2. The angle made with the positive horizontal axis by the vector representation of a complex number.

  7. Electronics The maximum absolute value reached by a voltage or current waveform.


[Latin amplitūdō, from amplus, large.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Cultural Dictionary

amplitude

In physics, the height of a crest (or the depth of a trough) of a wave.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

amplitude 
1549, from L. amplitudinem (nom. amplitudo, gen. amplitudinis) "wide extent, width," from amplus (see ample). Amplitude modulation in ref. to radio wave broadcast (as opposed to frequency modulation) first attested 1921, usually abbreviated a.m.
Online Etymology Dictionary, © 2001 Douglas Harper
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Legal Dictionary

Main Entry: ar·gu·ment
Function: noun
1 : a reason or the reasoning given for or against a matter under discussion —compare EVIDENCE, PROOF
2 : the act or process of arguing, reasoning, or discussing; especially : ORAL ARGUMENT —see also CLOSING ARGUMENT
Merriam-Webster's Dictionary of Law, © 1996 Merriam-Webster, Inc.
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Medical Dictionary

Main Entry: am·pli·tude
Pronunciation: 'am-pl&-"t(y)üd
Function: noun
1 : the extent or range of a quality, property, process,or phenomenon: as a : the extent of a vibratory movement (as of a pendulum) measured from the mean position to an extreme b : the maximum departure of the value of analternating current or wave from the average value
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Science Dictionary
amplitude   (ām'plĭ-td')  Pronunciation Key 

  1. Physics One half the full extent of a vibration, oscillation, or wave. The amplitude of an ocean wave is the maximum height of the wave crest above the level of calm water, or the maximum depth of the wave trough below the level of calm water. The amplitude of a pendulum swinging through an angle of 90° is 45°. Compare frequency.

  2. Electronics The amount by which a voltage or current changes from zero or an average value.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia

amplitude

in physics, the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position. It is equal to one-half the length of the vibration path. The amplitude of a pendulum is thus one-half the distance that the bob traverses in moving from one side to the other. Waves are generated by vibrating sources, their amplitude being proportional to the amplitude of the source

Learn more about amplitude with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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