| often |
When you do something often, you do it a lot. If you go swimming often, maybe you go every day or every week. Also, if someone asks you how often you do something, they want to know how many times you do it. |
| ogre |
In fairy tales, an ogre is an ugly giant who is very scary and cruel. |
| oh |
Oh is something we often say without thinking. It doesn't have any real meaning, but we often say it when we are surprised or when we have some strong feeling. Sometimes we say it when someone tell us a thing that we didn't know before. |
| Ohio |
Ohio is one of the fifty states that make up the United States of America. A short way to write Ohio is OH. |
| oil |
Oil is a special, slippery liquid that comes from the inside of certain natural things. Some kinds of oil come from the fat of animals and plants. We can eat these oils, and they are often used in cooking food. Potatoes are often cooked in oil, for example. Some kinds of oils come from minerals or are made from chemicals. We can't eat these oils. They are often used in products for cleaning, polishing, making your skin feel soft, and many other kinds of things. [2 definitions] |
| OK1 |
When something is OK, there is nothing wrong with it. It is good, or it is good enough. [2 definitions] |
| okay |
Okay is another way to write OK. When something is OK, there is nothing wrong with it. It is good, or it is good enough. |
| Oklahoma |
Oklahoma is one of the fifty states that make up the United States of America. A short way to write Oklahoma is OK. |
| old |
When someone is old, it means that they have lived for many years. If a thing is old, it has existed for a long time. [2 definitions] |
| old-fashioned |
When something is old-fashioned, it looks like or seems like something from the past. If something is old-fashioned, it doesn't seem new and modern. |
| olive |
An olive is a small green or black fruit with a hard seed inside. Olives are not sweet fruits. Most olives that we eat are prepared with a lot of salt and water. Olives have natural oil in them. The oil can be pressed out and used for cooking or for salad dressing. |
| Oman |
Oman is a country on the continent of Asia. It is in a part of the world called the Middle East. It lies on the shores of a sea called the Arabian Sea, and it is part of a peninsula also called the Arabian. Two of Oman's neighbors are Yemen and Saudi Arabia. Oman is a dry country with both mountains and deserts. |
| on |
When we say the book is on the shelf, we mean that the shelf is where the book is and the shelf is holding up the book. [8 definitions] |
| once |
Once means one time. If you went to the beach only once last summer, then you went only one time. [3 definitions] |
| one |
One is the word for the number 1. [4 definitions] |
| ones place |
If we look at a number like 26, we say that the 6 is in the ones place. If we look at a number like 523, we say that the 3 is in the ones place. The idea of place helps us understand what digits in a big number mean. For example, we understand that the 2 in 26 doesn't really mean 2. It means 20. That's because it's in the "tens place," which is just to the left of the ones place. A number's place is its position in the way we write numbers. |
| onion |
An onion is a round vegetable with a strong taste and smell. People usually eat onions in small pieces mixed in with other foods. Onions grow under the ground. |
| online |
When you do something online, you do it using a computer that is connected to many other computers. |
| only |
If you only want to watch TV, then watching TV is the one thing you want to do, and you don't want to do anything else. If you only go swimming in the summer, then you don't go swimming at any other time of the year. [3 definitions] |
| on purpose |
If you did something on purpose, you did it because you wanted to do it and you decided to do it. It was not an accident. |
| Ontario |
Ontario is one of the ten provinces of Canada. A province is an area of land that is one part of a country. Each province has its own capital. |