What is the answer to "Sphere prefix" in the Newsday Crossword?

The answer to the Newsday Crossword clue "Sphere prefix" is IONO (4 letters).

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Sphere prefix Newsday Crossword Clue

Across clue · from the December 18, 2025 puzzle

Stuck on “Sphere prefix” from the Newsday Crossword? Here is the verified answer:

Answer

IONO

4 letters · Across · last seen December 18, 2025

Adopted name5 Port of Yemen4 Roman moon goddess4 Half a lithography pair4 Lawn improvement process8 Misappropriated6 Henry Ford contemporary4 Crop up5 Senseless5 Literary count, familiarly4 Late night TV host Meyers4 Persian Gulf ruler4