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Glossary of Terms (as used in the lessons) O is for . . . |
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| oats | A grass widely cultivated for its edible seed. |
| obsidian | A volcanic glass, usually black or banded, displaying curved, shiny surfaces when fractured. |
| oil pressing | Removing the oil globules from the cells of seeds by crushing and solvent extraction. |
| Oklahoma Mesonet | Computer network in Oklahoma which monitors environmental and climatic conditions and provides the information to farmers and others who need to keep track of the weather. |
| okra | A tropical or semitropical plant commonly grown in Oklahoma gardens having edible, mucilaginous green pods. |
| omasum | The third stomach of a ruminant animal, located between the abomasums and the reticulum. |
| open range | Extensive range area which has not been fenced into pastures. |
| order | A logical or comprehensible arrangement. |
| organic | Of, pertaining to, or derived from living organisms. |
| organism | A living individual, plant or animal. |
| originator | The person who brought something into being. |
| overgraze | To graze land so heavily that the soil will no longer produce plants. |
| oxygen | A gas in the air and in the water which all lving things must have to live. |
| ozone | A pungent, colorless, toxic gas. |
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