Crossword Genius

Physicist Mach (5)

Ross

I believe the answer is:

ernst

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">physicist mach</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>

(Other definitions for ernst that I've seen before include "He painted" , "artist's name" , "Young partner" , "Surrealist; stern (anag.)" , "Max __; Dadaist" .)

I've seen this clue in the LA Times, the Newsday and The Wall Street Journal.
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