- asterism (n.)
[asterism 词源字典]
- 1590s, "a constellation, a group of stars," from Greek asterismos "a marking with stars," from aster "star" (see astro-). Any grouping of stars, whether a constellation or not (though in modern use, usually the latter). The "Big Dipper" is an asterism, not a constellation.[asterism etymology, asterism origin, 英语词源]