sut·tee also sa·ti 
(sŭ-tē, sŭtē′)
(sŭ-tē, sŭtē′)n.
1. The now illegal act or practice of a Hindu widow's cremating herself on her husband's funeral pyre in order to fulfill her true role as wife.
2. pl. sut·tees also sa·tis A widow who commits such an act.
[Sanskrit satī, virtuous woman, suttee, from feminine present participle of asti, s-, she is, is true; see es- in the Appendix of Indo-European roots.]