The word 'thence' originates from Old English 'þanone' or 'þanon', meaning 'from that place'. It is built upon the Proto-Germanic demonstrative base 'þa-', which is also the source for 'that' and 'there'. The '-es' suffix, common in Old English adverbs of place and time (as in 'hence', 'whence'), indicates motion away from a source. Over time, the form simplified from 'þanon' to Middle English 'thannes' and eventually to 'thence'. Its meaning expanded from the literal sense of motion from a place to include logical derivation ('from that fact') and temporal sequence ('from that time'), reflecting a common semantic shift from spatial to abstract relations.

The word 'thence' is a simplex adverb derived from Old English. It is not productively segmented in modern English, though historically it contains the Old English demonstrative element 'þan-' (from that) and the adverbial suffix '-es'.