Pregnenolone is a steroid hormone produced by the adrenal gland and plays an important role in the production of various hormones in the body. Although pregnenolone is the most commonly used term, there are alternative words for it that can be used interchangeably. Some synonyms for pregnenolone include 3β-Hydroxypregn-5-en-20-one, P5 or Pr5, and 5-Pregnene-3β-ol-20-one. In scientific literature, these terms are used instead of pregnenolone to describe the chemical structure and functions of this hormone. These synonyms may also be used to search for relevant information on pregnenolone in databases and online resources.