Meaning of PRESTRESS in English

I. (ˌ)prē-ˈstres transitive verb

Date: 1934

: to introduce internal stresses into (as a structural beam) to counteract the stresses that will result from applied load (as in incorporating cables under tension in concrete)

II. ˈprē-ˌstres, ˌprē-ˈ noun

Date: 1934

1. : the stresses introduced in prestressing

2. : the process of prestressing

3. : the condition of being prestressed

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.