![pedon pedon](https://www.tekportal.net/wp-content/uploads/2018/11/pedon.jpg)
noun
- a three-dimensional sample of a soil just large enough to show the characteristics of all its horizons.
- The smallest unit or volume of soil that contains all the soil horizons of a particular soil type. It usually has a surface area of approximately 1 sq m (10.76 sq ft) and extends from the ground surface down to bedrock.