Množina: synods

ETYM Latin synodus, Greek synodos a meeting; syn with + odos a way; cf. as. sinoth, senoth, French synode, both from the Latin.<br /> A council convened to discuss ecclesiastical business.
Ecclesiastical assembly or council.
Assembly or council, especially of Church.
Astronomy, (of period) between two conjunctions with sun.

Množina: Synod of Whitbies

Council summoned by King Oswy of Northumbria 664, which decided to adopt the Roman rather than the Celtic form of Christianity for Britain.

ETYM Latin synodalis: cf. French synodal.
Pertaining to a synod.

1. Of or relating to a synod; synodal
2. usually synodic [Greek synodikos, from synodos meeting, conjunction]; relating to conjunction; especially; relating to the period between two successive conjunctions of the same celestial bodies (as the moon and the sun)

Množina: synodic months

A lunar month

Množina: synodic periods

The time taken for a planet or moon to return to the same position in its orbit as seen from the Earth; that is, from one opposition to the next. It differs from the sidereal period because the Earth is moving in orbit around the Sun.

Of or pertaining to conjunction.

Množina: Synodontidaes

Soft-finned bottom-dwelling fishes; Also called: family Synodontidae.

Singular of synods is synod.