From BiblePortal Wikipedia

King James Dictionary [1]

HITH'ERTO, adv. To this time yet.

The Lord hath blessed me hitherto.  Joshua 17

1. In any time, or every time till now in time preceding the present. 2. To this place to a prescribed limit.

Hitherto shalt thou come, but no further.  Job 38

Webster's Dictionary [2]

(1): ( adv.) Up to this time; as yet; until now.

(2): ( adv.) To this place; to a prescribed limit.

Vine's Expository Dictionary of NT Words [3]

 John 16:24 John 5:17 Romans 1:13 1—Corinthians 3:2

International Standard Bible Encyclopedia [4]

hith´ẽr - too (to this): Used of both place and time. It is the translation of various words and phrases:

(1) Of place , ‛adh hălōm (  2 Samuel 7:18 , "Thou hast brought me hitherto," the Revised Version (British and American) "thus far";  1 Chronicles 17:16; perhaps  1 Samuel 7:12 , ‛adh hēnnāh , "Hitherto hath Yahweh helped us" (in connection with the setting up of the stone Ebenezer )) belongs to this head; hēnnāh is properly an adverb of place; it might always be rendered "thus far."

(2) Of time , ‛adh kōh , "unto this" (  Exodus 7:16 , "Hitherto thou hast not hearkened";  Joshua 17:14 , "Hitherto Yahweh hath blessed me"); mē'āz , "from then" ( 2 Samuel 15:34 , the Revised Version (British and American) "in time past"); hāle'āh , "beyond," etc. ( Isaiah 18:7 , "terrible from their beginning hitherto," the Revised Version (British and American) "onward"); ‛adh kāh , Aramaic ( Daniel 7:28 , the Revised Version (British and American) "here," margin "hitherto"); ‛adh hēnnāh , "unto here" ( Judges 16:13;  1 Samuel 1:16;  Psalm 71:17 , etc.); áchri toú deúro ( Romans 1:13 , "was let (the Revised Version (British and American) "hindered") hitherto"); héōs árti , "until now" ( John 5:17 , "My Father worketh hitherto, and I work" the Revised Version (British and American) "even until now," that is, "on the Sabbath as well as on other days', and I do as He does";  John 16:24 , "Hitherto have ye asked nothing in my name: ask, and ye shall receive," that is "up till now"; "now ask in my name and ye shall receive"); oúpō , "not yet" ( 1 Corinthians 3:2 , "Hitherto ye were not able to bear it," the Revised Version (British and American) "not yet").