Science

Oxalic Acid Definition Oxalic acid is a poisonous, crystalline acid found in a number of plants such as sorrel and the leaf blades of rhubarb.…

Multiplying by Repeated Addition Multiplication is defined as meaning that you have a certain number of groups of the same size. Then, it can be…

Pharynx Definition Pharynx is the passage that leads from the cavities of the nose and mouth to the larynx (voice box) and esophagus. Air passes…

Glycolic Acid Definition Glycolic acid is a colorless crystalline compound that occurs naturally in sugar beets and sugarcane. It is used in leather dyeing and…

Trachea Definition Trachea is the tube in vertebrate animals that leads from the larynx to the bronchial tubes and carries air to the lungs. In…

Selenium Trioxide Definition Selenium trioxide is an oxide of selenium. It is white, hygroscopic solid. It is also an oxidizing agent and a Lewis acid.…

Aortic Arch Definition Aortic arch is the curved portion between the ascending and descending portions of the aorta, lying behind the manubrium and giving rise…

Maleic Acid Definition Maleic acid is a geometric isomer of fumaric acid, having two carboxyl groups (COOH) on the same side of an ethylene chain.…

Place Values of Addition – Expanded Form In our decimal number system, the value of a digit depends on its place, or position, in the…

Thoracic Diaphragm Definition Thoracic diaphragm is the large muscle that separates the chest cavity from the abdominal cavity in mammals and is the principal muscle…

Selenium Definition Selenium is a nonmetallic element that occurs in a gray crystalline form, as a red powder, or as a black glassy material. Its…

Polymorphism Definition Polymorphism in materials science is refers to the ability of a solid material to exist in more than one form or crystal structure.…