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sclerophylly

American  
[skleer-uh-fil-ee] / ˈsklɪər əˌfɪl i /

noun

Botany.
  1. the normal development of much sclerenchyma in the leaves of certain plants, as some desert plants, resulting in thickened, hardened foliage that resists loss of moisture.


Etymology

Origin of sclerophylly

First recorded in 1900–05; sclero- + -phyll + -y 3