re·con·nais·sance also re·con·nois·sance (rĭ-kŏnə-səns, -zəns)
An inspection or exploration of an area, especially one made to gather military information.
[French, from Old French reconoissance, recognition, from reconoistre, reconoiss-, to recognize; see RECOGNIZE.]
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.