There are multiple definitions:

1. fluid-structure interaction(English)

   • model introduced to perform mechanical stress analysis of the heart and evaluate the effect of patch materials
   • Bioengineering, Model(ing), Materials science
   • https://doi.org…ruc.2010.12.012

2. family strain index(English)

   • a brief questionnaire designed to measure stress and demand on parents of children with ADHD
   • ADHD
   • Psychology, Questionnaire
   • https://doi.org…1111/sjop.12515

3. forced sexual initiation(English)

   • HIV
   • Sexuality, Misconduct
   • https://doi.org…abu.2019.104074