Without having previously seen the terrain.(adjective)
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Use "onsight" in a sentence
"It can be an “onsight” event or an event held at the location of the organization co-sponsoring."
"We also suggest closed loop systems and onsight regulatory inspection for each well as it is being cemented."
"There's a fantastic Czech deli on Queen Street West called "Prague Deli" with excellent fresh kolache baked onsight daily (along with other traditional foods)."