1) from which, whence
1a) of the place from which
1b) of the source from which a thing is known, from which, whereby
1c) of the cause from which, for which reason, wherefore, on which account
Part of Speech: adverb
From G3739 with the directive enclitic of source; from which place or source or cause (adverbially or conjugationally): - from thence, (from) whence, where (-by, -fore, -upon).
|a from where||84.11|
|b because of||89.25|
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 ὅθεν; click on the second column to search for that grammatical form of the root ὅθεν; click on the third column to search for that word and grammatical form; click on the total to search for the root ὅθεν.