the magnitude or brightness of a star as it appears to an observer on the earth
a transient fiery streak in the sky produced by a meteoroid passing through the earth's atmosphere also called a shooting star or bolide
the particular appearance presented by the moon or a planet at a given time
the Goat, a zodiacal constellation between Sagittarius and Aquarius.
the Water Bearer, a zodiacal constellation between Pisces and Capricornus
the brightness of a star in comparison with that of the sun: the luminosity of Sirius is expressed as 23 and indicates intrinsic brightness 23 times greater than the sun
1770, "line of separation between the bright and dark parts of a moon or planet," from L. terminator, from terminare (see terminus). Meaning "one who terminates (something)" is attested from 1846.
electronics A resistor connected to a signal wire in a bus or network for the purpose of impedance matching to prevent reflections. For example, a 50 ohm resistor connected across the end of an Ethernet cable. SCSI chains and some LocalTalk wiring schemes also require terminators. (1995-05-17)