coefficient a constant number that serves as a measure of some property or characteristic
cosmological constant an arbitrary constant in the equations of general relativity theory
equilibrium constant (chemistry) the ratio of concentrations when equilibrium is reached in a reversible reaction (when the rate of the forward reaction equals the rate of the reverse reaction)
gas constant,
universal gas constant,
r (physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole
hubble's constant,
hubble's parameter,
hubble constant,
hubble parameter (cosmology) the ratio of the speed of recession of a galaxy (due to the expansion of the universe) to its distance from the observer; the Hubble constant is not actually a constant, but is regarded as measuring the expansion rate today
ionic charge the charge on an ion is equal to a constant charge e multiplied by an integer from 1 to 15
quantity an adequate or large amount; "he had a quantity of ammunition"
Adjective
constant -
steadfast in purpose or devotion or affection; "a man constant in adherence to his ideals"; "a constant lover"; "constant as the northern star"
inconstant likely to change frequently often without apparent or cogent reason; variable; "inconstant affections"; "an inconstant lover"; "swear not by...the inconstant moon"- Shakespeare
faithful steadfast in affection or allegiance; "years of faithful service"; "faithful employees"; "we do not doubt that England has a faithful patriot in the Lord Chancellor"
invariable not liable to or capable of change; "an invariable temperature"; "an invariable rule"; "his invariable courtesy"
unchangeable not changeable or subject to change; "a fixed and unchangeable part of the germ plasm"-Ashley Montagu; "the unchangeable seasons"; "one of the unchangeable facts of life"
constancy,
stability the quality of being enduring and free from change or variation; "early mariners relied on the constancy of the trade winds"
staunch,
steadfast,
unswerving firm and dependable especially in loyalty; "a steadfast ally"; "a staunch defender of free speech"; "unswerving devotion"; "unswerving allegiance"
constant -
uninterrupted in time and indefinitely long continuing; "the ceaseless thunder of surf"; "in constant pain"; "night and day we live with the incessant noise of the city"; "the never-ending search for happiness"; "the perpetual struggle to maintain standards in a democracy"; "man's unceasing warfare with drought and isolation"; "unremitting demands of hunger"
continuous,
uninterrupted continuing in time or space without interruption; "a continuous rearrangement of electrons in the solar atoms results in the emission of light"- James Jeans; "a continuous bout of illness lasting six months"; "lived in continuous fear"; "a continuous row of warehouses"; "a continuous line has no gaps or breaks in it"; "moving midweek holidays to the nearest Monday or Friday allows uninterrupted work weeks"
constant -
unvarying in nature; "maintained a constant temperature"; "principles of unvarying validity"