1The state of being fourfold or of forming a set of four.

1. 1.1Astrology count noun A group of four zodiacal signs of the same quality.
   〔占星〕黄道带四宫群
   Example sentencesExamples

   • Now let's take a look at each sign and quadruplicity one by one, starting with the fire signs for a basic look at yourself, your friends and your colleagues.
   • Each four-sign group is called a quadruplicity.