ὄρθριος G3721
at daybreak, in the morning, early; of morning (as adjective)
This adjective means 'at daybreak' or 'in the morning,' often modifying verbs of motion or arrival: 'he arrived early,' 'to be present in the morning.' As an attributive adjective, it describes morning things: morning porridge, the morning song. Comedy puns on it with ὄρθιον (upright song). The rooster's morning crow is called ὄρθριον ᾆσμα. The neuter τὸ ὄρθριον functions adverbially: 'in the morning.' The comparative ὀρθρίτερον means 'earlier.' It evokes the fresh beginning of the day.
Senses
BDB / Lexicon Reference
ὄρθριος, α, ον, (ὄρθρος) at daybreak, in the morning, early, mostly with Verbs of motion, so as to agree with the person, ἀφίκετο.. ὄρθριος Refs 6th c.BC+; ὄρθριος παρεῖναι, ἥκειν, Refs 5th c.BC+ __2 generally, of the morning, πόλτος Refs 5th c.BC+; διὰ τὸν ὄ. νόμον the morning song, as parody of ὄρθιον, Refs 5th c.BC+; ὄρθριον ᾆσαι (i.e. ᾆσμα), of the cock, Refs 5th c.BC+; τὸ ὄ. as adverb, in the morning, early, Refs 5th c.BC+; also ὀρθρίτερον as adverb, earlier, Refs 2nd c.BC+