Persian

Noun

کیست • ‎(kist)

1. cyst

   کیست بیکر‎ ― kist-e Beyker ― Baker's cyst

   کیست تخمدان‎ ― kist-e toxm-dân ― ovarian cyst

Etymology 2

Phrase

کیست • ‎(kist)

1. A contraction of کی ‎(ki, “who”) and است ‎(ast, “is”).

   این مال کیست ؟‎ ― in mâl-e kist? ― to whom does this belong?

   آن آقا کیست ؟‎ ― in âqâ kist? ― who is that man?