Build your vocabulary with Merriam-Webster's Word of the Day! Each day a Merriam-Webster editor offers insight into a fascinating new word -- explaining its meaning, current use, and little-known details about its origin.
May 21st, 2016
Episode 531 of 871 episodes
Merriam-Webster's Word of the Day for May 21, 2016 is: zeroth \ZEE-rohth\ adjective : being numbered zero in a series; also : of, relating to, or being a zero Examples: "Many tall buildings lack a 13th floor, skipping from 12 to 14 to avoid that dreaded number. Most buildings—at least in the U.S.A.—also lack a zeroth floor." — Pat Murphy and Paul Doherty, Fantasy & Science Fiction, March 2005 "… I teach creative writing, and I expect I've confused a great many students with my 'tear up your synopsis' approach. My excuse is that I didn't start out as a literary type: in my zeroth life I was a physicist, and I've always felt some sympathy for Bertrand Russell's advice: 'Say everything in the smallest number of words in which it can be said clearly.'" — Andrew Crumey, Time Out, 27 Mar. 2008 Did you know? You don't have to be a rocket scientist to use zeroth, but the word, which was coined by physicists 120 years ago, does often show up in scientific contexts. (It comes from zero, which is itself from Arabic ṣifr.) These days zeroth is frequently used to suggest a level of importance that is even higher than first. Renowned Soviet physicist Lev Landau used zeroth this way when he classified all the famous physicists according to the relative value of their contributions to science. He put Niels Bohr and Max Planck, for example, right up there in the first class, and lesser-rated physicists in the second through fifth classes. Where did he think Albert Einstein and Isaac Newton belonged? They were unmatched, he felt, so they went in his zeroth class.