|a chattering or flighty, light-headed person.|
|a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.|
|1.||fixed and invariable; unchanging|
|2.||continual or continuous; incessant: constant interruptions|
|3.||resolute in mind, purpose, or affection; loyal|
|4.||something that is permanent or unchanging|
|5.||a specific quantity that is always invariable: the velocity of light is a constant|
|6.||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|
|7.||See logical constant|
|[C14: from Old French, from Latin constāns standing firm, from constāre to be steadfast, from stāre to stand]|
constant con·stant (kŏn'stənt)
Continually occurring; persistent.
Unchanging in nature, value, or extent; invariable.
A quantity assumed to have a fixed value in a specified mathematical context.
An experimental or theoretical condition, factor, or quantity that does not vary or that is regarded as invariant in specified circumstances.
|constant (kŏn'stənt) Pronunciation Key
a number, value, or object that has a fixed magnitude, physically or abstractly, as a part of a specific operation or discussion. In mathematics the term refers to a quantity (often represented by a symbol-e.g., pi, the ratio of a circle's circumference to its diameter) that does not change in a certain discussion or operation, or to a variable that can assume only one value. In logic it is a term with an invariant denotation (any symbol with a fixed designation, such as a connective or quantifier).
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