Proteins, from the Greek proteios, meaning first, are a class of organic compounds which are present in and vital to every living cell. In the form of skin, hair, callus, cartilage, muscles, tendons and ligaments, proteins hold together, protect, and provide structure to the body of a multi-celled organism. In the form of enzymes, hormones, antibodies, and globulins, they catalyze, regulate, and protect the body chemistry.
Definition of long division for Students. : division in arithmetic that involves several steps that are written out.
A long drawn out process or conflict lasts an unnecessarily long time or an unpleasantly long time. adj usu ADJ n. ...a long drawn out election campaign. Translation English Cobuild Collins Dictionary. long [1] ( longer comparative ) ( longest superlative ) (TIME)