blood sugar
Americannoun
-
glucose in the blood.
-
the quantity or percentage of glucose in the blood.
noun
Etymology
Origin of blood sugar
First recorded in 1925–30
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Pediatric obesity specialists say they are seeing high blood pressure, poor blood sugar control and liver dysfunction in children as young as 4.
From The Wall Street Journal • Jun. 22, 2026
Their A1C, a measure of blood sugar, was elevated.
From The Wall Street Journal • Jun. 22, 2026
People with diabetes are about 60% more likely to develop dementia than those without, and frequent episodes of low blood sugar are linked to a 50% higher chance of cognitive decline.
From Science Daily • Jun. 17, 2026
High blood sugar impairs immune function and narrows vessels that carry oxygen-rich blood, making it harder for skin to heal.
From Los Angeles Times • Jun. 14, 2026
Confusion, panic, and incoherent speech are all symptoms of extremely high blood pressure and blood sugar, which can lead to heart attack and stroke.
From "The Immortal Life of Henrietta Lacks" by Rebecca Skloot
![]()
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.