a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues
a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis
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
a volatile flammable mixture of hydrocarbons (hexane and heptane and octane etc.) derived from petroleum; used mainly as a fuel in internal-combustion engines
a detailed plan or explanation to guide you in setting standards or determining a course of action; "the president said he had a road map for normalizing relations with Vietnam"
tending to or capable of propelling; "propellant fuel for submarines"; "the faster a jet plane goes the greater its propulsive efficiency"; "universities...the seats of propulsive thought"
act of expanding in scope; making more widely available; "extension of the program to all in need"
act of stretching or straightening out a flexed limb
an educational opportunity provided by colleges and universities to people who not enrolled as regular students
an additional telephone set that is connected to the same telephone line
amount or degree or range to which something extends; "the wire has an extension of 50 feet"
the ability to raise the working leg high in the air; "the dancer was praised for her uncanny extension"; "good extension comes from a combination of training and native ability"
a string of characters beginning with a period and followed by one to three letters; the optional second part of a PC computer filename; "most applications provide extensions for the files they create"; "most BASIC files use the filename extension .BAS"
a mutually agreed delay in the date set for the completion of a job or payment of a debt; "they applied for an extension of the loan"
a reproduction of a written record (e.g. of a legal or school record)
something that has been transcribed; a written record (usually typewritten) of dictated or recorded speech; "he read a transcript of the interrogation"; "you can obtain a transcript of this radio program by sending a self-addressed envelope to the station"