Oregano (IPA: ?'reg?no?, British English: ?r?'g?:n??) or (Origanum vulgare) is a species of Origanum, native to Europe, the Mediterranean region and southern and central Asia. It is a perennial herb, growing to 20-80 cm tall, with opposite leaves 1-4 cm long. The flowers are purple, 3-4 mm long, produced in erect spikes. Oregano is the anglicized form of the Italian word origano, which is also a derivation from the Greek origanon ????a??? oros ???? "mountain" + the verb ganousthai ?a???s?a? "delight in" Oregano is an important culinary herb. It is particularly widely used in Turkish, Greek, Spanish and in Italian cuisine. It is the leaves that are used in cooking, and the dried herb is often more flavourful than the fresh. Oregano is often used in tomato sauces, fried vegetables, and grilled meat. Together with basil, it contributes much to the distinctive character of many Italian dishes. It is commonly used by local chefs in southern Philippines when boiling carabao or cow meat to eliminate the odor of the meat, and to add a nice, spicy flavor. Oregano combines nicely with pickled olives, capers, and lovage leaves. Unlike most Italian herbs, oregano works with hot and spicy food, which is popular in southern Italy. Oregano is an indispensable ingredient in Greek cuisine. Oregano adds flavor to Greek salad and is usually added to the lemon-olive oil sauce that accompanies many fish or meat barbecues and some casseroles. Oregano growing in a pot.It has an aromatic, warm and slightly bitter taste. It varies in intensity; good quality oregano is so strong that it almost numbs the tongue, but the cultivars adapted to colder climates have often unsatisfactory flavor. The influence of climate, season and soil on the composition of the essential oil is greater than the difference between the various species. The related species Origanum onites (Greece, Asia Minor) and O. heracleoticum (Italy, Balkan peninsula, West Asia) have similar flavors. A closely related plant is marjoram from Asia Minor, which, however, differs significantly in taste, because phenolic compounds are missing in its essential oil. Some breeds show a flavor intermediate between oregano and marjoram. Pizza The dish most commonly associated with oregano is pizza. Its variations have probably been eaten in Southern Italy for centuries. Oregano became popular in the US when returning WWII soldiers brought back with them a taste for the â€œpizza herbâ€� Dehydration (hypohydration) is defined as excessive loss of body water. It is literally the removal of water (Ancient Greek: ?d??, hÃ½dor) from an object. In physiological terms, it entails a relative deficiency of water molecules in relation to other dissolved solutes. Some definitions even require a rise in blood sodium concentration, but in reality a loss of body water usually accompanies a loss of solutes as well.