supergiant noun & adjective. ['su:pǝdʒʌɪǝnt, 'sju:-] E20.
[from SUPER- 2 + GIANT.]
A. noun.
1. A very large star that is even brighter than a giant, often despite being relatively cool. E20.

2. A supergiant galaxy. L20.
b. adjective.
1. Astronomy.
a. Of a star: that is a supergiant. M20.
b. Of a galaxy: in the brightest of five luminosity classes. M20.

2. gen. Extremely large. L20.

[TahlilGaran] English Dictionary ▲