scan
verb
1 Adam scanned the horizon | his eyes were scanning her face:
study, examine, scrutinize, inspect, survey, search, scour, sweep, rake;
look at, look someone/something up and down, stare at, gaze at, eye, watch, contemplate, regard;
take stock of;
Hunting glass;
informal check out, recce;
North American, informal scope;
archaic con.
scan Oxford Dictionary of English