Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
επιβάσισ his step LXX.Song.3.10
επίβασιν for his step LXX.Ps.104.3

Liddell-Scott-Jones

ἐπίβασις (epibasis) a step G:N-F

ἐπίβασις-βᾰσις, εως, ,

stepping upon, [Refs 2nd c.AD+]; advent, [Refs] risings.. , [Refs 2nd c.BC+]

__2. means of approach, access, ἔχειν . [Refs 3rd c.AD+]: hence concretely, rungs, steps, [Refs 5th c.BC+]
__3. ἔς τινα ποιεῖσθαι . make a handle against, a means of attacking one, [Refs 5th c.BC+]; attack, [ἐπίβασιςβασιν ἔχον">Refs 2nd c.AD+] liable to be impugned, [Refs]
__4. getting on one's feet, of a child beginning to walk, [Refs 5th c.BC+]; foothold, in snow, [Refs 2nd c.BC+]
__5. resting of one thing on another, e.g. of a bone, [Refs 5th c.BC+]
__6. Rhet., κατ᾽ ἐπίβασιςβασιν by gradation, [Refs 3rd c.AD+]
__7. that on which one stands, [Refs 1st c.AD+]
__8. entry into office, [Refs 3rd c.AD+]
__II. of the male, covering, [Refs 1st c.AD+]