Definition of Amplitude

1. Noun. (physics) the maximum displacement of a periodic wave.

Category relationships: Natural Philosophy, Physics
Generic synonyms: Displacement, Shift

2. Noun. The property of copious abundance.
Exact synonyms: Bountifulness, Bounty
Generic synonyms: Abundance, Copiousness, Teemingness
Derivative terms: Bountiful, Bountiful

3. Noun. Greatness of magnitude.
Generic synonyms: Magnitude
Specialized synonyms: Signal Level, Background Level, Noise Level

Definition of Amplitude

1. n. State of being ample; extent of surface or space; largeness of dimensions; size.

Definition of Amplitude

1. Noun. The measure of something's size, especially in terms of width or breadth; largeness, magnitude. ¹

2. Noun. (mathematics) The maximum absolute value of the vertical component of a curve or function, especially one that is periodic. ¹

3. Noun. (physics) The maximum absolute value of some quantity that varies. ¹

¹ Source:

Definition of Amplitude

1. [n -S]

Medical Definition of Amplitude

1. 1. State of being ample; extent of surface or space; largeness of dimensions; size. "The cathedral of Lincoln . . . Is a magnificent structure, proportionable to the amplitude of the diocese." (Fuller) 2. Largeness, in a figurative sense; breadth; abundance; fullness. Of extent of capacity or intellectual powers. "Amplitude of mind." . "Amplitude of comprehension." . Of extent of means or resources. "Amplitude of reward." . 3. The arc of the horizon between the true east or west point and the center of the sun, or a star, at its rising or setting. At the rising, the amplitude is eastern or ortive: at the setting, it is western, occiduous, or occasive. It is also northern or southern, when north or south of the equator. The arc of the horizon between the true east or west point and the foot of the vertical circle passing through any star or object. 4. The horizontal line which measures the distance to which a projectile is thrown; the range. 5. The extent of a movement measured from the starting point or position of equilibrium; applied especially to vibratory movements. 6. An angle upon which the value of some function depends; a term used more especially in connection with elliptic functions. Magnetic amplitude, the angular distance of a heavenly body, when on the horizon, from the magnetic east or west point as indicated by the compass. The difference between the magnetic and the true or astronomical amplitude (see 3 above) is the "variation of the compass." Origin: L. Amplitudo, fr. Amplus: cf. F. Amplitude. See Ample. Source: Websters Dictionary (01 Mar 1998)

Lexicographical Neighbors of Amplitude

amplified fragment length polymorphism
amplifier host
amplitude (current term)
amplitude distortion
amplitude level
amplitude modulation
amplitude modulations
amplitude of accommodation
amplitude of convergence
amplitude of pulse
amplitude spectroscopy

Literary usage of Amplitude

Below you will find example usage of this term as found in modern and/or classical literature:

1. A Text-book of Physics by William Watson (1905)
"If / is the length of the string and A is the amplitude at the centre, then, if the string is vibrating in its fundamental form, we may represent the ..."

2. Philosophical Transactions by Royal Society (Great Britain) (1803)
"Clifton 0 18 42,93 3 9 6>98 2 50 44,05 4 10 36,23 1 20 13,53 2 50 22,70 5 20 35,66 2 30 10,37 amplitude of arc - 250 24,74 amplitude of arc - 2 50 25,29 51 ..."

3. Manual of the diseases of the eye: For Students and General Practitioners by Charles Henry May (1901)
"The amplitude of Accommodation is the difference between the refractive ... The amplitude of accommodation in diopters is found by dividing 40 by the ..."

4. Science by American Association for the Advancement of Science (1883)
"In Aplysia giant neurons, the attenuation of unitary EPSP amplitude during habituation suggests that prolonged changes in synaptic efficacy are involved (4) ..."

5. Theory of Functions of a Complex Variable by Heinrich Burkhardt (1913)
"Preliminary Investigation of the Change of amplitude of a Continuously ... From these infinitely many values, the principal value of the amplitude is now ..."

6. Algebra: An Elementary Text-book, for the Higher Classes of Secondary by George Chrystal (1904)
"In either way, the amplitude is uniquely determined when the coefficients x and y of the complex number are given, except in Hie case of a real negative ..."

7. Human Vitality and Efficiency Under Prolonged Restricted Diet by Francis Gano Benedict (1919)
"(8) LATENCY, amplitude. AND REFRACTORY PERIOD OF PATELLAR REFLEX.1 Of all the human reflexes that may be elicited by appropriate stimuli, ..."

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