also: ゾーディアック · ゾウディアック
noun
Refers to the zodiac in astrology or astronomy. Often used in compound terms like ゾディアックサイン (zodiac sign).
彼女はゾディアックの星座に詳しい。
She is knowledgeable about the signs of the zodiac.
この雑誌には毎月ゾディアック占いが載っている。
This magazine features a zodiac horoscope every month.
黄道十二宮 is the formal astronomical/astrological term for the twelve signs of the zodiac, while ゾディアック is a loanword often used in casual or Western contexts.
Borrowed from English 'zodiac', ultimately from Latin zōdiacus, from Ancient Greek ζῳδιακός (zōidiakós).