Words that start with O

Orange orangutans avidly ogle an orchard of oleanders in Oregon.

Ois forOne

There is one cat in the picture. The number that comes after one is two. You can also use one as a pronoun, for example "one must do one's homework".

Ois forOnion

Scientific name: allium cepa
Onions are a vegetable. There are many different kinds of onions, ranging in size and colour from purple to red to white to green. Onions are used in almost every kind of food, raw or cooked. They can be very sharp when they are raw and many children do not like raw onions, but when they are cooked they are quite sweet.

Ois forOnyx

Onyx is a type of quartz. It comes in a variety of colours, with the most common being striped and black. The black variety is most popular in jewelry making.

Ois forOoze

A liquid oozes when it comes out of something else slowly. The sandwich in the picture is oozing jam.

Ois forOpal

Opal is not a true mineral, but a crystalline gel made up of spheres of silicon dioxide and water. The pattern of the spheres makes opal refract light into lots of different colours, with blue and green being the most common. Opal is used often in jewelry, and is the national stone of Australia.

Ois forOpaque

Something is opaque if you can't see through it. Most things are opaque. The term is most often used to describe stockings that are not transparent.

Ois forOpen

Something is open if you can go through it or into it. The door in the picture is open. The opposite of open is closed.
Ophidiophobia or ophiophobia is a fear of snakes. Many people are scared of snakes because snakes are actually quite dangerous and should be treated with caution, but they do not have a phobia of snakes. People who are ophidiophobic are irrationally afraid of snakes, even just in pictures or on television where there is no real threat.

Ois forOpossum

Scientific name: order: didelphimorphia
Opossums are a small to medium sized, common creature that has spread from the western United States. They have a varied diet and are successful breeders. They are the only marsupial found outside of the Australian area.

Ois forOpposite

Two things are opposites if they are as different to each other as possible. Some examples of opposites are black and white, good and bad, little and big.