Irrigation Glossary

The terms in this glossary are presented in an effort to provide a foundation for common understanding in communications covering irrigation.

* indicates variables and symbols that are preferred for use in the Irrigation Association education and certification programs. A date in small letters indicates the date when the Certification Board approved the term.
[ ] symbols located within bracket indicates the IA preferred abbreviation of symbol for the term specified.
{ } symbols located within bracket indicates the IA preferred units for the term specified.
General definitions of terms not used in mathematical equations are not flagged in any way.
Quantitative terms have {units} indicating sample units.
Three dots (... ) at the end of a definition indicates that the definition has been truncated.
Terms with strike-through are non-preferred usage.
References are provided for the convenience of the reader and do not infer original reference.