Answer:
   
   "She'eilot" are questions, "teshuvot" are answers. The "u-" prefix
   means "and". "She'eilot uteshuvot", literally "questions and answers",
   are responsa. In real yeshiva jargon one would say "shu"t" (pronounced
   like the word "shoot"), using only the acronym. They're a form of
   halachic writing written in answer to questions mailed the decisor,
   although sometimes the question is self-posed. What's nice about shu"t
   is that the typical format is to provide the reasoning that lead to
   the conclusion. As opposed to codes, which simply state conclusions.

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