|Origin:||Early French reconnoître, from Old French reconoistre; RECOGNIZE|
re‧con‧noi‧tre British English ; reconnoiter American English [intransitive and transitive]
to try to find out the position and size of your enemy's army, for example by flying planes over land where their soldiers are
to find out information about an area:
All morning, the world's top cyclists have been reconnoitring the course.