The most common and most likely answer to this crossword clue is the 8 letter word SYZYGIES
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The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
Crossword Answer definitions
SYZYGIES noun- An alignment of three celestial bodies (for example, the Sun, Earth, and Moon) such that one body is directly between the other two, such as occurs at an eclipse.
- An archetypal pairing of contrasexual opposites, symbolizing the communication of the conscious and unconscious minds.
- A relation between generators of a module.
- The fusion of some or all of the organs.
- The association of two protozoa end-to-end or laterally for the purpose of asexual exchange of genetic material.
- The pairing of chromosomes in meiosis.