6 letters · 15 points in Scrabble
noun a starlike object that may send out radio waves and other forms of energy; many have large red shifts
originBlend of quasi- + stellar, from quasi-stellar radio source. Coined by American astrophysicist Hong-Yee Chiu in 1964 in an article in Physics Today. By surface analysis, quasi- + -ar.
Etymology from Wiktionary, CC BY-SA 3.0