juxtaglomerularPronunciation: /ˌdʒʌkstəglɒˈmɛrʊlə/Definition of juxtaglomerular adjective Anatomy denoting a group of structures secreting regulatory hormones into the arteriole which leads into a glomerulus in the kidney: juxtaglomerular apparatusOrigin: 1930s: from Latin juxta 'near to' + glomerular (see glomerulus)juxtaglomerular in other Oxford dictionaries Definition of juxtaglomerular in the US English dictionary