"gradient" - key terms from Wikipedia

albumin gradient
average gradient
concentration gradient
conjugate gradient	method
diffusion gradient
displacement gradient	tensor
electrochemical gradient
geothermal gradient
gradient
gradient	across
gradient	across the mitral valve
gradient	analytics
gradient	ascent
gradient	between
gradient	coils
gradient	descent
gradient	descent algorithm
gradient	direction
gradient	domain high dynamic range
gradient	echo
gradient	elution
gradient	equations
gradient	field
gradient	gel
gradient	magnitude
gradient	of a function
gradient	vector
hydraulic gradient
if the mean gradient
magnetic field gradient
osmotic gradient
outflow tract gradient
ph gradient
potential gradient
pressure gradient
pressure gradient	force
producing a proton gradient
proton gradient
proton gradient	across
sequential gradient
ses gradient
slope gradient
steep gradient
steepest gradient	descent
sucrose gradient
temperature gradient
thermal gradient
velocity gradient
wind gradient