prediabetes

n.
A condition thought to be a precursor of adult-onset diabetes mellitus, marked by carbohydrate intolerance or other symptoms of the disease.

prediabetic pre·di'a·bet'ic (-bĕt'ĭk) adj. & n.

(prē'dī-ə-bē'tĭs, -tēz)
n.

The condition of having a hereditary tendency or high probability for developing diabetes mellitus, although neither symptoms nor test results confirm the presence of the disease.

A state of latent impairment of carbohydrate metabolism in which the criteria for diabetes mellitus are not all satisfied.