: a proteolytic enzyme of the kidney that plays a major role in the release of angiotensin
Examples of renin in a Sentence
Recent Examples on the Web
High glucose levels also prod the kidneys to release more of the hormone renin, which sets off a hormonal cascade critical to controlling blood pressure and maintaining healthy electrolyte levels.
—
Jyoti Madhusoodanan,
Scientific American,
16 Dec. 2025
The latter is for medicines that block the B1 receptors found in the heart, which when activated, focus on elevated heart rate, increasing pumping force and releasing a kidney enzyme called renin.
—
Krystal Nurse,
USA TODAY,
13 Jan. 2025
The kidneys respond by secreting a substance, renin, which starts a cascade (the renin-angiotensin system) that causes the blood pressure to go up.
—
Dr. Keith Roach,
oregonlive,
8 Sep. 2023
Over the next 15 years, investigations by several groups showed that renin itself did not affect blood vessels, but rather activated a blood protein called angiotensinogen, making angiotensin.
—
Mark C. Fishman,
STAT,
7 May 2018
One of the ways the body exerts this control is with a hormone called renin, which makes blood vessels narrower when the pressure needs to be kept up.
—
Quanta Magazine,
30 Nov. 2017
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Jyoti Madhusoodanan,
Scientific American,
16 Dec. 2025
The latter is for medicines that block the B1 receptors found in the heart, which when activated, focus on elevated heart rate, increasing pumping force and releasing a kidney enzyme called renin.
—
Krystal Nurse,
USA TODAY,
13 Jan. 2025
The kidneys respond by secreting a substance, renin, which starts a cascade (the renin-angiotensin system) that causes the blood pressure to go up.
—
Dr. Keith Roach,
oregonlive,
8 Sep. 2023
Over the next 15 years, investigations by several groups showed that renin itself did not affect blood vessels, but rather activated a blood protein called angiotensinogen, making angiotensin.
—
Mark C. Fishman,
STAT,
7 May 2018
One of the ways the body exerts this control is with a hormone called renin, which makes blood vessels narrower when the pressure needs to be kept up.
—
Quanta Magazine,
30 Nov. 2017
Cite this Entry
“Renin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/renin. Accessed 4 Jul. 2026.
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