(mineralogy) a star-shaped figure with six rays that is seen in some crystal structures under reflected or transmitted light(astronomy) a cluster of stars (or a small constellation)
英汉双解大词典
asterism/ˈæstəˌrɪzəm/
1.
N（名词）
three asterisks arranged in a triangle (⁂ or ), to draw attention to the text that follows 把三个星号组成三角状以引起接下文字的注意