Something used to toughen.

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  • toughener — See toughen. * * * …   Universalium

  • toughener — n. something which hardens, something which makes stronger …   English contemporary dictionary

  • toughener — toughˈener noun • • • Main Entry: ↑tough …   Useful english dictionary

  • toughen — toughener, n. /tuf euhn/, v.t., v.i. to make or become tough or tougher. [1575 85; TOUGH + EN1] Syn. harden, firm, strengthen, stiffen. * * * …   Universalium

  • lead processing — Introduction       preparation of the ore for use in various products.       Lead (Pb) is one of the oldest metals known, being one of seven metals used in the ancient world (the others are gold, silver, copper, iron, tin, and mercury). Its low… …   Universalium

  • toughen — verb make or become tough. Derivatives toughener noun …   English new terms dictionary

  • toughen — /ˈtʌfən/ (say tufuhn) verb (t) 1. to make tough or tougher. –verb (i) 2. to become tough or tougher. {tough + en1} –toughener, noun …   Australian English dictionary

  • toughen — [tuf′ən] vt., vi. to make or become tough or tougher toughener n …   English World dictionary

  • tough — adj. & n. adj. 1 hard to break, cut, tear, or chew; durable; strong. 2 (of a person) able to endure hardship; hardy. 3 unyielding, stubborn, difficult (it was a tough job; a tough customer). 4 colloq. a acting sternly; hard (get tough with). b… …   Useful english dictionary

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