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T________
Definitions
made hard or flexible or resilient especially by heat treatment
Used in a sentence
“Two large windows are provided in the front of the cab with a roller type of route indicator between them; both windows and indicator are fitted with ¼-in.-thick toughened plate glass.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer0 curated clues
No curated clues for toughened yet.