Return to Book List   Glossary   Choose a Letter | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |   List of words for Letter 'O' Click on    to hear the word and definition. Click on the picture to see a bigger picture. Some are animations. observe see, hear, taste, touch, or smell  You observe when you touch. ocean a very large body of salt water  The ocean stretches out as far as you can see. orbit the path an object takes as it moves around another object  The Moon orbits Earth. order tell or show what happens first, next, or last  The pictures are in order. oxygen a part of air that people need to live  We breathe in oxygen from air. Leave Glossary