A diagram or profile showing the amino acid composition of a protein or food, typically presented as a bar chart or table of the relative amounts of each amino acid. Nutritionists use aminograms to evaluate protein quality: by comparing a food’s pattern against human requirements, they can spot the limiting amino acid, the one in shortest supply relative to need, which determines how well the body can use the protein. Complementary proteins, such as rice and beans, show aminograms whose strengths and weaknesses cancel out, the scientific basis for traditional food combinations. Feed formulators and clinical dietitians rely on these profiles to design diets and supplements that deliver complete amino acid nutrition, making the aminogram a fundamental tool wherever protein quality matters.