Pronunciation: (ri-kon'u-suns, -zuns),[key] —n. 1. the act of reconnoitering.
2. Mil.a search made for useful military information in the field, esp. by examining the ground.
3. Survey.,Civ. Engin.a general examination or survey of a region, usually followed by a detailed survey.
4. Geol.an examination or survey of the general geological characteristics of a region. Also,re•con'nois•sance.