OP,
Get a better dictionary, such as this one:
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outstrip
Function: transitive verb
Etymology: out- + strip
1 : to go faster than <a speed far outstripping the fastest rocket plane -- R.M.Sutton>
2 a : to leave behind : go ahead of : EXCEL, SURPASS <in certain countries knowledge had far outstripped wisdom -- A.L.Guérard> <the central nervous system ... has outstripped all else -- Waldemar Kaempffert> b : to exceed in quantity or number <fall into ever greater destitution as their numbers outstrip their resources -- Barbara Ward> <the demand for mortgage money outstripped savings -- L.H.Olsen>
synonym see EXCEED
http://unabridged.merriam-webster.com
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You need it. Pay the $30/year, as I do.