Exam: TOEFL

Definition: A shape that has six straight sides and six corners.

Example: The architect designed a building in the shape of a hexagon.

Definition: Describing a shape that has six sides and six angles, like a hexagon.

Example: The tiles on the floor are hexagonal, creating a unique pattern.

Definition: A type of chemical compound that includes six water molecules for each molecule of the compound.

Example: The laboratory synthesized a hexahydrate to study its properties.

Definition: A chemical compound derived from hexamethylene diamine, commonly used as a ganglionic blocker to treat high blood pressure.

Example: The doctor prescribed hexamethonium to help manage the patient's hypertension.

Definition: A chemical compound made of carbon, hydrogen, and nitrogen, used in various industrial and scientific applications.

Example: Hexamine is often used as a fuel tablet in camping stoves.

Definition: A clear, colorless liquid that is flammable and made from petroleum, often used as a solvent or in thermometers.

Example: Hexane is commonly used in laboratories as a solvent for various chemical reactions.

Definition: A type of enzyme that helps add a phosphate group to a sugar molecule, which is important in the process of breaking down carbohydrates for energy.

Example: Hexokinase plays a crucial role in the metabolism of glucose in the body.

Definition: A type of enzyme that helps break down certain complex sugars by removing specific chemical groups from them.

Example: Hexosaminidase is important for processing certain lipids in the body.

Definition: A type of simple sugar that has six carbon atoms in each molecule, including sugars like glucose and fructose.

Example: Glucose is a common hexose that our bodies use for energy.

Definition: The time when someone or something is at its most successful or popular.

Example: The band was at its heyday in the 1990s, with hit songs topping the charts.