01 n. State of being ample; extent of surface or space; largeness of dimensions; size.
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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.
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2.
Largeness, in a figurative sense; breadth; abundance; fullness.
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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.(Astron.)
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4.
The horizontal line which measures the distance to which a projectile is thrown; the range.(Gun.)
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5.
The extent of a movement measured from the starting point or position of equilibrium; -- applied especially to vibratory movements.(Physics)
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6.
An angle upon which the value of some function depends; -- a term used more especially in connection with elliptic functions.(math.)
Phrases & compounds
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.”