What does the word lengthen mean?

Usage examples for lengthen

  1. This will prevent the hardening of the cellular tissues which produces the decrepitude of old age, and help to bless and lengthen human life. – The Universe a Vast Electric Organism by George Woodward Warder
  2. Change the chin, lengthen my nose, make the eyes brown instead of blue, and it might be me. – The Sky Is Falling by Lester del Rey
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