synodic

/si-nod-ik/US // sɪˈnɒd ɪk //UK // (sɪˈnɒdɪk) //

同步性,同步,同期,同步的

Definitions

adj.形容词 adjective

1
- : Astronomy. pertaining to a conjunction, or to two successive conjunctions of the same bodies.
- : of or relating to a synod; synodal.

Lunar Year, a period of 12 synodic lunar months, being about 354.5 days.
They determined correctly within a small fraction the length of the synodic revolution of the moon.
Why, because twenty-seven days is about the synodic period of solar rotation.
The correlation with the synodic rotation of the Sun was practically perfect.