Composition of outer space, in old belief Crossword Clue
5 letters · New York Times · Thursday, June 20, 2002 · 59-Across
Appeared in 1 New York Times Crossword: Thursday, June 20, 2002.
Exact puzzle match · New York Times · June 20, 2002 · 59-Across · 5 letters
ETHER0 of 5 letters revealed
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What does this clue mean?
a medium that was once supposed to fill all space and to support the propagation of electromagnetic waves
noun
WordNet® (Princeton University)
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