Syzygy

Read as \SIZ-i-jee\ and means...
1. Astronomy: an alignment of three celestial objects, as the sun, the earth, and either the moon or a planet.
Example: Syzygyof the sun-earth-moon system occurs at the time of full moon or new moon.

2. Classical Prosody: a group or combination of two feet, sometimes restricted to a combination of two feet of different kinds.
.....Prosody-the patterns of stress and intonation in a language

3. any two related things, either alike or opposite

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