Prefix "uni-"

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Across
  1. 1. one of a kind; unusual or rare
  2. 3. a horse-like fabled animal that has one horn growing out of the middle of its forehead
  3. 4. a one-wheeled vehicle on which the rider sits and pedals
  4. 5. one group
  5. 6. having only one cell
Down
  1. 1. moving in only one direction
  2. 2. to join together into one group
  3. 5. one sided
  4. 6. a one-piece leotard and tights combination
  5. 7. an instance of saying the same words or sounds at the same time; a group that sounds like one