Of or relating to the stars. / (astronomy) Relating to a measurement of time relative to the position of the stars.

In a sidereal manner.

(obsolete) sidereal

(obsolete) planet-struck; blasted.

simple past tense and past participle of siderate

A plant that is grown alongside a crop in order to improve its growth; A companion crop.

To strike down or incapacitate.

present participle of siderate

plural of siderate

Third-person singular simple present indicative form of siderate