constant


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Related to constant: Constant term

constant

1. a specific quantity that is always invariable
2. 
a. Maths a symbol representing an unspecified number that remains invariable throughout a particular series of operations
b. Physics a theoretical or experimental quantity or property that is considered invariable throughout a particular series of calculations or experiments
3. See logical constant
http://physics.nist.gov/cuu/Constants/index.html

Constant

 

in prosody, a constant element in the rhythmic organization of verse; mainly, a constant stress on a certain syllable. Thus, in the verse of M. Iu. Lermontov’s narrative poem Mtsyri, the constant is the constant word boundary after each eighth syllable (boundary of the verse) and the constant stress on the last, eighth syllable of each segment.

Vse luchshe pered kem-nibúd’
Slovami oblegchit’ mne grúd;
No liudiam ia ne delal zlá,
I potomu moi delá
Ne mnogo pol’zy vain uznát’;
A dushu mozhno l’ rasskazát’? … 

Constant

 

a quality that has the same value throughout a given discussion. The constancy of the quality x can be expressed symbolically as x = const. Constants are often represented by the letters C and K.

constant

[′kän·stənt]
(science and technology)
A value that does not change during a particular process.

constant

In programming, a fixed value in a program. Minimum and maximum amounts, dates, prices, headlines and error messages are examples.
References in classic literature ?
If I were a more constant sort of fellow, I should have held on either to Badger or to Kenge and Carboy like grim death, and should have begun to be steady and systematic by this time, and shouldn't be in debt, and--"
But as the variability of the extraordinarily-developed part or organ has been so great and long-continued within a period not excessively remote, we might, as a general rule, expect still to find more variability in such parts than in other parts of the organisation, which have remained for a much longer period nearly constant.
It would be almost superfluous to adduce evidence in support of the above statement, that specific characters are more variable than generic; but I have repeatedly noticed in works on natural history, that when an author has remarked with surprise that some important organ or part, which is generally very constant throughout large groups of species, has differed considerably in closely-allied species, that it has, also, been variable in the individuals of some of the species.
On the other hand, the points in which species differ from other species of the same genus, are called specific characters; and as these specific characters have varied and come to differ within the period of the branching off of the species from a common progenitor, it is probable that they should still often be in some degree variable,--at least more variable than those parts of the organisation which have for a very long period remained constant.
The cause of the original variability of secondary sexual characters is not manifest; but we can see why these characters should not have been rendered as constant and uniform as other parts of the organisation; for secondary sexual characters have been accumulated by sexual selection, which is less rigid in its action than ordinary selection, as it does not entail death, but only gives fewer offspring to the less favoured males.
Hence arises, as I have found to my cost, a constant tendency to fill up the wide gaps of knowledge, by inaccurate and superficial hypotheses.
Constant terror, perhaps, had had as much to do with his physical condition as had improper food.
Beside him were two hyenas, which rumor had said were his only and constant companions.
Ceaseless slavery meeting with no reward; constant gentleness and kindness met by cruelty as constant; love, labour, patience, watchfulness, without even so much as the acknowledgement of a good word; all this, how many of them have to bear in quiet, and appear abroad with cheerful faces as if they felt nothing.
Poor Dolly's heart--a little, gentle, idle, fickle thing; giddy, restless, fluttering; constant to nothing but bright looks, and smiles and laughter--Dolly's heart was breaking.
Pickwick was confined to bed, Sam was his constant attendant.
Figure 14: Orthopedic Tools Market, Germany, Revenue ($m), USD Constant, Historic, 2005-2012 36