chromaffin

 
Pronunciation: /krə(ʊ)ˈmafɪn/

adjective

[attributive] Physiology
  • denoting granules or vesicles containing adrenalin and noradrenaline, and the secretory cells of the adrenal medulla in which they are found.

Origin:

early 20th century: from chromo-1 'chromium' + Latin affinis 'akin' (because readily stained brown by chromates)