Lexical Definition

‎αὐτόματος‎ autómatos (ow-tom'-at-os) by itself ^G:A
from ‎αὐτός‎ and the same as ‎μάτην‎

of own accord, of self.

• self-moved ("automatic"), i.e. spontaneous

Abbott-Smith

αὐτόματος, -ον, and -η, -ον (etym. doubtful; v. Boisacq, Prellwitz, s.v.), [in LXX, Le 25:5, 11, IV Ki 19:29 (סָפִיחַ), Jos 6:5, Jb 24:24, Wi 17:6*;]
1. of persons, acting of one's own will.
2. Of inanimate things and natural agencies, of itself, of its own accord: γῆ, Mk 4:28 (MM, s.v.); πύλη, Ac 12:10.†

Abbott-Smith References

Liddell-Scott-Jones

αὐτόματος-μᾰτος, η, ον,

[Refs 8th c.BC+] and Attic dialect; ος, ον [Refs 8th c.BC+].

__1 of persons, acting of one's own will, of oneself, αὐ. δέ οἱ ἦλθε[Refs 8th c.BC+]
__2 of inanimate things, self-acting, spontaneous, of the gates of Olympus, αὐτόματοςμαται δὲ πύλαι μύκον οὐρανοῦ[Refs 8th c.BC+]; of the tripods of Hephaistos, which ran of themselves, ὄφρα οἱ αὐτόματοςματοι.. δυσαίατ᾽ ἀγῶνα[Refs 5th c.BC+]marionettes, [Refs 4th c.BC+] assim: generally, spontaneous, βίος[Refs 5th c.BC+]
__3 of natural agencies, ὁ ποταμὸς αὐ. ἐπελθών of itself, [Refs 5th c.BC+]; of plants, growing of themselves, αὐ. ἐκ τῆς γῆς γίνεται[αὐτόματοςματα πάντ᾽ ἀγαθὰ.. ποριζεται 5th-6th c.BC: Aristophanes Comicus “Acharnenses” 976, compare 5th c.BC: Cratinus Comicus 160 ">Refs 5th c.BC+]; of philosophers, αὐ. ἀναφύονται[Refs 5th c.BC+]
__4 of events, happening of themselves, without external agency, αὐ. δεσμὰ διελύθη[Refs 5th c.BC+]; αὐ. θάνατος natural death, [Refs 4th c.BC+]not to be accounted for externally, [Refs 5th c.BC+]; without visible cause, accidental, opposed to ἀπὸ πείρης, [Refs 5th c.BC+]
__II αὐτόματοςματον, τό, accident, τὸ αὐ. αἰτιᾶσθαι[Refs 5th c.BC+]; τῷ αὐ., opposed to τέχνῃ, [Refs 5th c.BC+]; τὸ Αὐ. personified, [αὐτόματοςματόν ἐστιν ὡς ἔοικέ που θεός 4th-3rd c.BC: Menander Comicus 291. ">Refs 4th c.BC+]
__III adverb -τως, ={ἀπὸ ταὐτομάτου}, variant in [Refs 5th c.BC+]; of itself, κοχλίας αὐ. βαδίζων[Refs 2nd c.BC+] —also αὐτοματεί or -τί (which see).