Dictionary

ultratough en · ADJ

Etymology

From ultra- + tough.

Meanings

1. Extremely tough; of utmost toughness.
   • At the front, the nose cone was on ultratough maraging steel and needle-pointed. This too would eventually become dispensable. 1994, Frederick Forsyth, The Fist of God, Bantam Books, →ISBN, page 310:
   • The ultratough baseball captain stepped up, “Any other last wishes?’ he inquired. 1938, Army Navy Journal 1938-02-05: Volume 75, Issue 23, Gannett Company, Incorporated, page 476:
   • The U.S.S Sam Houston had to be as reliable and as strong as human ingenuity could make it; and it is largely made from steels that didn't even exist 10 years ago. To resist the enormous pressure of very deep dives, the hull -- two-thirds of the ship's total weight -- is made from HY-80, an ultratough armorplate steel developed jointly by the Navy's Bereau of Ships and United States Steel metallurgists. 1962, United States Congress, Congressional Record, Congress, page 18911:

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