Diabetes mellitus; any of a group of metabolic diseases whereby a person (or other animal) has high blood sugar due to an inability to produce, or inability to metabolize, sufficient quantities of the hormone insulin.

Capable of distinguishing or of making a distinction. / Of, pertaining to, or serving as a diacritic

A diacritic (mark).

distinguishing / (orthography, not comparable) Denoting a distinguishing mark applied to a letter or character.

A special mark added to a letter to indicate a different pronunciation, stress, tone, or meaning.

Showing wickedness typical of a devil. / Extremely evil or cruel.

(transitive, medicine) To determine which disease is causing a sick person's signs and symptoms; to find the diagnosis. / (by extension) To determine the cause of a problem.

A plan, drawing, sketch or outline to show how something works, or show the relationships between the parts of a whole. / A graph or chart.

(transitive) To represent or indicate something using a diagram. / (UK) To schedule the operations of a locomotive or train according to a diagram.

A conversation or other form of discourse between two or more individuals.