bicycle
bike
wheel cycle | a wheeled vehicle that has two wheels and is moved by foot pedals |
pedicab
cycle rickshaw | a tricycle (usually propelled by pedalling), used in the Orient for transporting passengers for hire, boys who once pulled rickshaws now pedal pedicabs |
| cycle of rebirth | (Hinduism) repeated rebirth in new forms |
| cycle oscillation | a single complete execution of a periodically repeated phenomenon, a year constitutes a cycle of the seasons |
| cardiac cycle | the complete cycle of events in the heart from the beginning of one heart beat to the beginning of the next, an electrical impulse conducted through the heart muscle that constricts the atria which is followed by constriction of the ventricles, the cardiac cycle can be shown on an electrocardiogram |
Carnot cycle
Carnot's ideal cycle | a cycle (of expansion and compression) of an idealized reversible heat engine that does work without loss of heat |
| cycle | a periodically repeated sequence of events, a cycle of reprisal and retaliation |
business cycle
trade cycle | recurring fluctuations in economic activity consisting of recession and recovery and growth and decline |
| cycle | a series of poems or songs on the same theme, Schubert's song cycles |
food web
food cycle | (ecology) a community of organisms where there are several interrelated food chains |
| life cycle | a series of stages through which an organism passes between recurrences of a primary stage |
| carbon cycle | a thermonuclear reaction in the interior of stars |
| carbon cycle | the organic circulation of carbon from the atmosphere into organisms and back again |
Krebs cycle
Krebs citric acid cycle
citric acid cycle
tricarboxylic acid cycle | in all plants and animals: a series of enzymatic reactions in mitochondria involving oxidative metabolism of acetyl compounds to produce high-energy phosphate compounds that are the source of cellular energy |
| life cycle | the course of developmental changes in an organism from fertilized zygote to maturity when another zygote can be produced |
| nitrogen cycle | the circulation of nitrogen, nitrates from the soil are absorbed by plants which are eaten by animals that die and decay returning the nitrogen back to the soil |
vicious circle
vicious cycle | one trouble leads to another that aggravates the first |
hertz
Hz
cycle per second
cycles
second
cps
cycle | the unit of frequency, one hertz has a periodic interval of one second |
cycle
rhythm
round | an interval during which a recurring sequence of events occurs, the never-ending cycle of the seasons |
| menstrual cycle | a recurring cycle (beginning at menarche and ending at menopause) in which the endometrial lining of the uterus prepares for pregnancy, if pregnancy does not occur the lining is shed at menstruation, the average menstrual cycle is days |
refresh
freshen
refreshen | make fresh again |
freshen refresh refreshen
freshen up | become or make oneself fresh again, She freshened up after the tennis game |
refresh
freshen | make (to feel) fresh, The cool water refreshed us |
| cycle | recur in repeating sequences |
review brush up
refresh | refresh one's memory, I reviewed the material before the test |
bicycle
cycle bike
pedal
wheel | ride a bicycle |
motorbike
motorcycle
cycle | ride a motorcycle |
| cycle | pass through a cycle, This machine automatically cycles |
| cycle on | come to the starting point of a cycle |
| cycle | cause to go through a recurring sequence, cycle the laundry in this washing program |