"cycle" - key terms from Wikipedia

atkinson cycle
baroque cycle
brayton cycle
break the cycle
business cycle
calvin cycle
carbon cycle
cardiac cycle
carnot cycle
cell cycle
characters in the inheritance cycle
citric acid cycle
clock cycle
combined cycle
cycle
cycle	lanes
cycle	rickshaws
diesel cycle
duty cycle
each cycle
epic cycle
estrous cycle
fuel cycle
hamiltonian cycle
hit for the cycle
hype cycle
inheritance cycle
joke cycle
krebs cycle
life cycle
life cycle	assessment
metonic cycle
nitrogen cycle
nuclear fuel cycle
otto cycle
product life cycle
rankine cycle
refrigeration cycle
ring cycle
rock cycle
saros cycle
solar cycle
stirling cycle
sunspot cycle
systems development life cycle
tca cycle
ulster cycle
urea cycle
wash cycle
water cycle