"constant" - key terms from Wikipedia

acid dissociation constant
arbitrary constant
avogadro constant
boltzmann constant
constant
constant	coefficients
constant	current
constant	gardener
constant	motion
constant	of integration
constant	of proportionality
constant	pressure
constant	speed
constant	stress
constant	temperature
constant	term
constant	terms
constant	velocity
constant	volume
constant	width
cosmological constant
coupling constant
decay constant
dielectric constant
dimensionless constant
dissociation constant
electric constant
equilibrium constant
faraday constant
fundamental physical constant
gas constant
gravitational constant
heat capacity at constant
line of constant
lipschitz constant
magic constant
magnetic constant
man of constant	sorrow
mathematical constant
molar mass constant
physical constant
planck constant
rate constant
reduced planck constant
rydberg constant
solar constant
solubility constant
specific gas constant
spring constant
time constant