Crosswords Solver

Answer: multiplets
Answer	Crossword Clue
multiplets	MULTIPLET, a group of elementary particles whose members differ only in electric charge
multiplets	A group of closely associated things, esp. closely spaced spectral lines or atomic energy levels, or subatomic particles differing only in a single property (e.g., charge or strangeness)

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.

Answer: multiplets