Words that start with O

Orange orangutans avidly ogle an orchard of oleanders in Oregon.

Ois forOklahoma

Oklahoma, abbreviated to OK, is a state in the south central region of the United States of America. The capital of Oklahoma is Oklahoma City.

Ois forOld

Something is old if it has existed for a very long time. Something that is really, really old is called ancient. When people get old they get grey hair and wrinkles.
The Old English Sheepdog is a very old breed of large herding dog. It has very long, thick, grey-and-white hair all over it, covering its face. Old English sheepdog puppies are born black-and-white. They are friendly, sociable dogs. They are high maintainence though, as their coat needs regular brushing and clipping.
Something is old fashioned if it looks like it belongs in the past, and doesn't fit in with things around it. Clothes can be old fashioned, and behaviour can be old fashioned too. Old fashioned things can also be called retro.

Ois forOleander

Scientific name: nerium oleander
Oleanders, also known as rose laurel, are a pretty, evergreen flowering shrub. They usually have pink or white flowers. Oleanders are one of the most poisonous plants known. Their sap is toxic, and even the dead, dried plant is dangerous. Horses have been known to die from eating oleander leaves. Even a single leaf might be enough to kill a small child.

Ois forOlive

Scientific name: olea europaea
Olives are the fruit of a small, slow-growing tree. They are originally from the Mediterranean region and grow best in poor soils in Mediterranean climates. Olives can be grown easily from both seeds and cuttings, but trees grown from seed don't always grow good fruit. Olives can't be eaten fresh from the tree, they are too bitter. Olives need to be prepared by soaking them in salty water or otherwise preparing them to be eaten. Some types of olive can be pressed and oil made from them.

Ois forOlivine

Olivine is a common olive green mineral made up of magnesium iron silicate. It has also been found in asteroids and on the moon. Olivine can be quite brittle. When olivine is transparent and gem quality, is is called peridot.

Ois forOmelette

An omelette is made from beaten eggs, cooked in a frying pan. A little milk or cream is often added to the eggs, and sometimes omelettes are made from only the white of the eggs, without the yolk. Omelettes may also contain added herbs, spices, diced vegetables or meat, particularly ham.

Ois forOmnivore

An omnivore is a person or animal that eats meat and vegetables.

Ois forOn

Something is on if it is powered up and able to be used. The computer in the picture is turned on. On is also used to indicate positioning, as in "the cup is on the table". The opposite of on is off.