1) to get upon, mount
1a) to embark in
1b) to go aboard (a ship)
2) to set foot in, enter
Part of Speech: verb
From G1909 and the base of G939; to walk upon, that is, mount, ascend, embark, arrive: - come (into), enter into, go aboard, sit upon, take ship.
|b go onto||15.97|
These two sites give similar information, with the definition from several dictionaries and statistics on the use of the word.
Perseus Digital Library
University of Chicago's Logion lexicon
Thayer's dictionary plus other information.
From this site's dictionary (in Italian)
Click on the first column to search for that word as a form of the root ἐπιβαίνω; click on the second column to search for that grammatical form of the root ἐπιβαίνω; click on the third column to search for that word and grammatical form; click on the total to search for the root ἐπιβαίνω.