Syzygy

Tom was worried about the approaching trisolar syzygy.

Syzygy is the alignment of three celestial bodies, in this case the Sun, Moon and Earth.

The duration of an eclipse depends on the relative positions of the sun, moon, and earth in their syzygy.

In 1936 Jung defends his concept of animus and anima by reference to the idea of the syzygy, concluding from the evidence in many different mythologies of the divine couple, united by a sacred marriage, that this motif is as universal as the existence of men and women. He postulates that in the syzygy the archetypal union of the parents is expressed, the mother corresponding to the anima.

A finitely presented module is an A-module M given by a finite number of generators and relations. Therefore it is a module with a finite generator set having a finitely generated syzygy module.

When two or more arm-joints meet transversely by a rigid suture, and only the upper one is pinnule-bearing, those joints form a syzygy, whether their apposed faces are striated, dotted, or smooth.

These include syzygy, fusion of larvae or adults of flatworms, fusion of buds of some Tunicata, somatic fertilization (fusion of spermatozoa with somatic cells), composite zygotes of some Cestoda and Insecta, and fusion of cells in various tissues.