ˈreɪdɪəu n. & v. --n. (pl. -os) 1 (often attrib.) a
the transmission and reception of
sound messages etc. by
electromagnetic waves of
radio-frequency (cf. WIRELESS). b an
apparatus for receiving, broadcasting, or transmitting radio signals. c a
message sent or received by radio. 2 a sound broadcasting in
general (prefers the radio). b a broadcasting
station or channel (Radio One). --v. (-oes, -oed) 1 tr. a
send (a message) by radio. b send a message to (a person) by radio. 2 intr.
communicate or
broadcast by radio. øradio
astronomy the
branch of astronomy
concerned with the radio-frequency
range of the electromagnetic
spectrum. radio
cab (or car) a cab or
car equipped with a two-way radio. radio
fix the
position of an
aircraft,
ship,
etc., found by radio. radio
galaxy a galaxy emitting
radiation in the radio-frequency range of the electromagnetic spectrum. radio
ham see HAM. radio
star a
small star etc. emitting
strong radio waves. radio
telescope a
directional aerial system for collecting and analysing radiation in the radio-frequency range
from stars etc. [short for
radio-telegraphy etc.]
