| population control | control over the growth of population, a government program |
| population | the act of populating (causing to live in a place), he deplored the population of colonies with convicted criminals |
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 |
population
universe | (statistics) the entire aggregation of items from which samples can be drawn, it is an estimate of the mean of the population |
| population profile | a chart showing the number of people as a function of their ages |
| 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 |
| population shift | a change in the relative numbers of the different groups of individuals making up a population |
business cycle
trade cycle | recurring fluctuations in economic activity consisting of recession and recovery and growth and decline |
| population | a group of organisms of the same species inhabiting a given area, they hired hunters to keep down the deer population |
| population | the people who inhabit a territory or state, the population seemed to be well fed and clothed |
| Population Commission | the commission of the Economic and Social Council of the United Nations that is concerned with population control |
| cycle | a series of poems or songs on the same theme, Schubert's song cycles |
demographer
demographist
population scientist | a scientist who studies the growth and density of populations and their vital statistics |
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 |
| population growth | increase in the number of people who inhabit a territory or state |
vicious circle
vicious cycle | one trouble leads to another that aggravates the first |
| population | the number of inhabitants (either the total number or the number of a particular race or class) in a given place (country or city etc.), people come and go, but the population of this town has remained approximately constant for the past decade, the African-American population of Salt Lake City has been increasing |
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 |
| cycle | recur in repeating sequences |
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 |