The term "supernatural" comes from the Latin supra and natura, meaning "above nature." What does "preternatural" mean?

• beneath nature
  If an occurrence is described as preternatural, then it's beyond nature and our understanding of the natural world. In practice, however, such occurrences also fall under the classification of supernatural as well.
• beyond nature
  If an occurrence is described as preternatural, then it's beyond nature and our understanding of the natural world. In practice, however, such occurrences also fall under the classification of supernatural as well.
• before nature
  If an occurrence is described as preternatural, then it's beyond nature and our understanding of the natural world. In practice, however, such occurrences also fall under the classification of supernatural as well.