What does glycaemia mean?
Glycaemia is the clinical term for the presence or level of glucose in the blood, the substance that cells use as an important source of energy. In British spelling it is also used, especially in compounds such as impaired fasting glycaemia, for an abnormal blood-glucose state; the American spelling is glycemia. The term is most familiar in connection with diabetes, but it does not by itself mean diabetes, and a person can have raised or reduced glycaemia for many reasons, including food intake, illness, medication, and problems with insulin production. Doctors assess glycaemia through blood tests, including fasting glucose measurements and the HbA1c test, which reflects average glucose levels over roughly three months. At home, people with diabetes may monitor their glycaemia with a glucose meter. Because it combines the Greek roots for “sweet” and “blood,” glycaemia gives a precise name to what is often called blood sugar in everyday speech. Its clinical tone makes it especially useful in medicine, public health, and nutrition, while blood glucose is a more neutral expression for general audiences.
nounThe presence or concentration of glucose in the blood. In medical compounds, it can also refer to an abnormal blood-glucose state.
- The presence or concentration of glucose in the blood, especially in medical contexts concerned with normal or abnormal blood-glucose regulation.
"Her daily readings help her doctor assess whether her glycaemia is well controlled."
"Her daily readings help her doctor assess whether her glycaemia is well controlled."
"Impaired fasting glycaemia may indicate an increased risk of developing type 2 diabetes."
The plural is uncommon; medical prose often discusses blood-glucose conditions collectively without pluralizing the noun.
"Several transient glycaemias were identified during screening."
Glycaemia literally means “sweet blood,” combining the Greek words for sweet and blood.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does glycaemia come from?
The modern medical term was formed in the 19th century from Greek glykys, meaning “sweet,” and haima, meaning “blood.” The spelling glycaemia became established in British English, while glycemia became standard in American English; related medical words include glucose, glycogen, and glycosuria.
Related word forms
How glycaemia is actually used
This is a formal, chiefly clinical term. British English generally uses glycaemia, while American English uses glycemia. It denotes blood glucose generally, although compounds often specify an abnormal state; it should not automatically be equated with diabetes.
Easily confused with glycaemia
Glycaemia and glycemia refer to the same medical concept, but glycaemia is the standard British spelling and glycemia is the standard American spelling.