Glossary
Terms starting with O
127 definitions · page 3 of 3.
- ovum
- Egg. The one functional product of each meiosis in female animals.
- OXYGENATE
- a term used in the petroleum industry to denote octane components containing hydrogen, carbon and oxygen in their molecular structure. Includes ethers such as MTBE and ETBE and alcohols such as ethanol or methanol. The oxygenate is a prime ingredient in…
- Oyster
- A saltwater bivalve with a sea-salty flavour and a succulent texture. Aficionados insist that they’re best eaten raw, perhaps with freshly ground black pepper and a squeeze of lemon juice or a drop of Tabasco sauce. However, they can be steamed, grilled or…
- Oyster mushrooms
- An ear-shaped silvery-grey or greyish-brown mushroom that grows in clumps or clusters. It's now cultivated so it's more readily available and found in most supermarkets. Oyster mushrooms have a subtle flavour and are often used in oriental cookery. They cook…
- Oyster sauce
- Oyster sauce is a thick, rich brown southern Chinese condiment, flavoured with extract of oysters. Spend a bit more on a good brand of oyster sauce - it will have more natural oyster flavour and less monosodium glutamate (MSG). Keep refrigerated once opened.
- ozone
- a gas composed of three oxygen atoms that forms a thin diffuse layer in the upper atmosphere. This layer absorbs harmful ultraviolet rays from the sun and also prevents heat loss from Earth.
- OZONE
- A kind of oxygen that has three atoms per molecule instead of the usual two. Ozone is a poisonous gas, but the ozone layer in the upper atmosphere shields life on earth from deadly ultraviolet radiation from space. The molecule contains three oxygen atoms…