Search Result for "toughened": 
Wordnet 3.0

ADJECTIVE (2)

1. physically toughened;
- Example: "the tough bottoms of his feet"
[syn: tough, toughened]

2. made hard or flexible or resilient especially by heat treatment;
- Example: "a sword of tempered steel"
- Example: "tempered glass"
[syn: tempered, treated, hardened, toughened]



The Collaborative International Dictionary of English v.0.48:

Toughen \Tough"en\, v. i. & t. [imp. & p. p. Toughened; p. pr.
   & vb. n. Toughening.]
   To grow or make tough, or tougher.
   [1913 Webster]


WordNet (r) 3.0 (2006):

toughened
    adj 1: physically toughened; "the tough bottoms of his feet"
           [syn: tough, toughened] [ant: tender,
           untoughened]
    2: made hard or flexible or resilient especially by heat
       treatment; "a sword of tempered steel"; "tempered glass"
       [syn: tempered, treated, hardened, toughened] [ant:
       unhardened, untempered]