The clue "Nuclear fission pioneer Otto" last appeared in the L.A. Times Daily crossword on August 13, 2016. The correct answer for this puzzle is "HAHN", a 4-letter word.
Solution HAHN is 4 letters long. So far we haven´t got a solution of the same word length.
There is 1 solutions. The longest is HAHN with 4 letters, and the shortest is HAHN with 4 letters.
No, "NUCLEAR FISSION PIONEER OTTO" hasn´t seen a spike right now. Solvers are most interested in: Boosted, ___ system (GPS device), Authority, Discuss and Talkative.
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The solution is 4 letters long.