[adv] (used to introduce a logical conclusion) from that fact or reason or as a result; "therefore X must be true"; "the eggs were fresh and hence satisfactory"; "we were young and thence optimistic"; "it is late and thus we must go"; "the witness is biased and so cannot be trusted"
[adv] from that place or from there; "proceeded thence directly to college"; "flew to Helsinki and thence to Moscow"; "roads that lead therefrom"
[adv] from that circumstance or source; "atomic formulas and all compounds thence constructible"- W.V.Quine; "a natural conclusion follows thence";"public interest and a policy deriving therefrom"; "Typhus fever results therefrom"