air passage provided by a retractable device containing intake and exhaust pipes; permits a submarine to stay submerged for extended periods of time
breathing device consisting of a bent tube fitting into a swimmer's mouth and extending above the surface; allows swimmer to breathe while face down in the water
(Greek mythology) 7 daughters of Atlas and half-sisters of the Pleiades; they nurtured the infant Dionysus and Zeus placed them among the stars as a reward
(American football) a play in which a defensive player is allowed to cross the line of scrimmage and then blocked off as the runner goes through the place the lineman vacated
the number of observations in a given statistical category
the ratio of the number of observations in a statistical category to the total number of observations
the number of occurrences within a given time period; "the frequency of modulation was 40 cycles per second"; "the frequency of his seizures increased as he grew older"
a passage for water (or other fluids) to flow through; "the fields were crossed with irrigation channels"; "gutters carried off the rainwater into a series of channels under the street"
a television station and its programs; "a satellite TV channel"; "surfing through the channels"; "they offer more than one hundred channels"
a path over which electrical signals can pass; "a channel is typically what you rent from a telephone company"
(often plural) a means of communication or access; "it must go through official channels"; "lines of communication were set up between the two firms"
a deep and relatively narrow body of water (as in a river or a harbor or a strait linking two larger bodies) that allows the best passage for vessels; "the ship went aground in the channel"
direct the flow of; "channel information towards a broad audience"
the act of populating (causing to live in a place); "he deplored the population of colonies with convicted criminals"
(statistics) the entire aggregation of items from which samples can be drawn; "it is an estimate of the mean of the population"
a group of organisms of the same species populating a given area; "they hired hunters to keep down the deer population"
the people who inhabit a territory or state; "the population seemed to be well fed and clothed"
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"
computer circuit consisting of an electronic sub-assembly; copper conductors are laminated on an insulating board or card and circuit components are inserted into holes and dip soldered