Lexical Definition

‎ἐπιβαίνω‎ epibaínō (ep-ee-bah'-ee-no) to mount/board ^G:V
from ‎ἐπί‎ and the base of ‎βάσις‎

come (into), enter into, go abroad, sit upon, take ship.

• to walk upon, i.e. mount, ascend, embark, arrive

Abbott-Smith

ἐπι-βαίνω [in LXX chiefly for רָכַב ;]
1. to get up on, mount: seq. ἐπί, c. acc, Mt 21:5 (LXX); to embark in (a boat), go aboard: c. dat., Ac 27:2; seq. εἰς, Ac 21:6 (Rec.); absol., Ac 21:2.
2. to go up to, go on to, enter: seq. εἰς, Ac 20:18 21:4; c. dat., Ac 25:1.†

Abbott-Smith References

Liddell-Scott-Jones

ἐπιβαίνω,

rarely ἐπηχ-βάω, imperative [Refs 6th c.BC+], Doric dialect infinitive ἐπιβῆν (belowIV): future -βήσομαι: perfect -βέβηκα: aorist 2 ἐπέβην: aorist 1 middle ἐπεβησάμην (of which Hom.always uses the Epic dialect form ἐπεβήσετο, imperative [Refs 8th c.BC+]

__A. in these tenses, intransitive, go upon:
__I. with genitive, set foot on, tread, walk upon, γαίης, ἠπείρου, [Refs 8th c.BC+] (Lyric poetry); ἐ. τῶν οὔρων set foot on the confines, [Refs 6th c.BC+]; πυρῆς ἐπιβάντ᾽ ἀλεγεινῆς, of a corpse, placed upon.. , [Refs 8th c.BC+].
__I.2. get upon, mount on, [Refs 8th c.BC+]; νεῶν [Refs 5th c.BC+]; λέκτρων ἐ. [Refs 8th c.BC+], in aorist middle, [Refs 8th c.BC+], +others
__I.2.b. Architecture texts, to be superposed, [Refs], compare 111 (Lebad.).
__I.3. of Time, arrive at, [Refs 6th c.BC+]; δεκάτω (i.e. ἔτεος) ἐ. [Refs 3rd c.BC+].
__I.4. metaphorically, ἀναιδείης ἐπέβησαν have trodden the path of shamelessness, [Refs 8th c.BC+] enter into joy, [Refs 5th c.BC+] (Lyric poetry); ἐ. δόξης entertain an expectation, [Refs] undertake it, [Refs 5th c.BC+]; ἐ. τῆς ἀφορμῆς, τῆς προφάσεως, seize upon it, [Refs 2nd c.AD+], etc.; preside over, τῆς ἀνθρωπίνης [Refs 4th c.AD+], +others
__II. with dative, get upon, board, [Refs 5th c.BC+]; land on, [Refs 1st c.BC+]: metaphorically, [Refs 5th c.BC+]; also, make forcible entry into, τινός οἰκίαις, γῇ, [Refs 2nd c.AD+]
__II.b. with a preposition, ἐπὶ πύργῳ ἄλλος πύργος [Refs 5th c.BC+].
__II.2. with dative person, set upon, assault, [Refs 6th c.BC+], etc.; simply, approach, uncertain in [Refs 5th c.BC+]
__II.3. trample on, [Refs 6th c.BC+].
__III. with accusative loci, light upon, in [Refs 8th c.BC+] twice of gods lighting upon earth after their descent from Olympus, Πιερίην ἐπιβᾶσα, ἐπιβάς, [Refs 8th c.BC+] light on the fit time, [Refs 5th c.BC+]; then simply, go on to a place, enter it, [Refs 5th c.BC+] (anapaest meter): with preposition, ἐ. ἐπὶ χώραν Decrees Amphict. cited in [Refs 4th c.BC+]
__III.2. rarely with accusative person, attack, only poetry, [Refs 5th c.BC+]
__III.3. mount, [Refs 8th c.BC+]: more frequently with preposition, ἐπὶ [Refs 5th c.BC+], of made quadrupeds, cover a female, [Refs 4th c.BC+]
__III.4. ἐ. ἐπὶ τὸ σκέλος use, put one's weight on, a broken leg, [Refs 5th c.BC+]
__III.5. with accusative of the Instr. of Motion (compare [Refs 5th c.BC+]
__IV. absolutely, get a footing, stand on one's feet, [Refs 8th c.BC+] it is forbidden to set foot here, [Refs]
__IV.2. step onwards, advance, [Refs 8th c.BC+] (assuming variant, Lyric poetry): me taph., advance in one's demands, [Refs 2nd c.BC+]
__IV.3. mount on a chariot or on horseback, be mounted, [Refs 5th c.BC+]; go or be on board ship, [Refs 8th c.BC+]
__B. Causal in future -βήσω [Refs 2nd c.AD+], Epic dialect infinitive -βησέμεν [Refs 8th c.BC+], but usually in aorist 1 active (ἐπιβιβάζω, ἐπιβάσκω serve as present):—make one mount, set him upon, [Refs 8th c.BC+]; ὥς κ᾽ ἐμὲ.. ἐμῆς [Refs 8th c.BC+]; πλοίων [Refs 2nd c.AD+]; τινὰς ἐπὶ τὰς ναῦς [Refs]: also in aorist 1 middle, [Refs 3rd c.BC+].
__B.b. of things, νευρὰν ἐπέβασε κορώνας set the string on his bow's tip, [Refs 5th c.BC+]
__B.2. metaphorically (compare[Refs 4th c.BC+] bring to great glory, [Refs 8th c.BC+]; χαλιφρονέοντα σαοφροσύνης ἐπέβησαν they bring him to sobriety, [Refs 8th c.BC+]; δουλοσύνας (probably) [Refs 5th c.BC+] had brought thee to full age, [Refs]
__B.3. [ἠὼς] πολέας ἐπέβησε κελεύθου dawn sets them on their way, [Refs 8th c.BC+]