List of Words for Letter ‘O’
Click on 
to hear the word and definition
-
observe
to use one or more of your senses to identify or learn about an object or event
-
ocean
a large body of salt water
-
orbit
the path an object takes as it travels around another object
-
order
a smaller group within a class of similar organisms
-
organ
a group of tissues that work together to perform a specific bodily function
-
organ system
a group of organs that work together to perform a specific bodily function
-
organism
an individual living thing that carries out five basic life functions
-
oscillation
movement back and forth