Answer: curies

AnswerCrossword Clue
CURIESNoted Polish-French physicists.
CURIESPair of great scientists.
CURIESFamed Nobel prize winners.
CURIESFamous physicists.
CURIESGreat scientists.
CURIESRadium discoverers
CURIESRadioactivity units
curiesunit of activity of radioactive substances equivalent to 3.70 x 1010 disintegrations per second: it is approximately the amount of activity produced by 1 g of radium-226
curiesCURIE, a unit of radioactivity