(reaction kinetics) a proportionality constant between the rate of a reaction and a reaction-dependent product of concentrations, as appearing in rate equations

(mathematics) A constant, denoted γ and recurring in analysis and number theory, that is defined as the limiting difference between the harmonic series and the natural logarithm and has the approximate value 0.57721566.

(chemistry) The equilibrium constant for the dissociation of an acid, and thus a measure of its strength

(historical) A one-piece cotton garment worn alone or under a spacesuit during Apollo space missions.

plural of constant-wear garment

(number theory) The constant of proportionality (approximately 0.7642) in the relationship between the number of positive integers less than x that are the sum of two square numbers, for large x, and the expression x/√.

(mathematics) An irrational constant that is the concatenation of "0." with the base-10 representations of the prime numbers in order, i.e. approximately 0.235711131719232931374143...

(mathematics) The numeric value of the integral over the positive real numbers of the reciprocal of the gamma function, F=∫₀ ᪲1/(𝛤(x))dx=2.8077702420285....

(physics) The constant of proportionality involved in the Stefan-Boltzmann law.

(aviation) A type of propeller that rotates at a set rotational velocity, but whose power is set by varying the pitch of the blades.