Enter a clue or pattern or both:
The Clue
Probe (11 letter answer)
The Answer
EXPLORATION
Tags
Notes
The answer EXPLORATION is so rare that it appears less than once every 2500 puzzles.
Definition
EXPLORATION as a noun:
1. (exploration, geographic expedition) = to travel for the purpose of discovery
2. a careful systematic search
3. a systematic consideration; "he called for a careful exploration of the consequences"