prostaglandin

/pɹɒstəˈɡlændɪn/

IPA: /P R OW0 S T AE0 G L AE1 N D IH0 N/

noun
  1. 1

    Any of a group of naturally occurring lipids derived from the C20 acid prostanoic acid; they have a number of physiological functions and may be considered to be hormones.

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Source: https://en.wiktionary.org/wiki/prostaglandin