Of an appropriate or pertinent nature.
by the way, incidental
To the purpose; appropriately.
By the way.
Timely; at a good time.
Regarding or concerning.
Adhering to whatever is customary, traditional, or generally accepted.
Of a branch of Judaism.
Of pollen, seed, or spores: viable for a long time; viable when dried to low moisture content.
Of the eastern churches, Eastern Orthodox.
Conforming to the accepted, established, or traditional doctrines of a given faith, religion, or ideology.