You know what it looks like… but what is it called?
TAKE THE QUIZdark-line spectrum
noun
: a line spectrum produced by the passage of white light through an ionized gas or vapor
Love words? Need even more definitions?
Merriam-Webster unabridged
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- Namesake of the leotard, Jules Léotard had what profession?


Can you make 12 words with 7 letters?
PLAY
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