Answer: IONOSPHERE

The crossword puzzle answer IONOSPHERE has 3 different clues. We have seen it appear in puzzles 3 times.

Crossword puzzle clues for IONOSPHERE:

• Earth’s outer atmosphere
• Layer around Earth affecting radio waves
• Region 30-250 miles above the earth's surface

Usage in crossword puzzles

• Washington Post Daily Crossword Puzzle - 2001-10-14
• Washington Post Daily Crossword Puzzle - 2002-03-24

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