Glossary of terms and acronyms [2] from A to Z in the Digital Library of The Earth System Education- DLESE, where: Italicized items within a definition are defined elsewhere in the glossary.

DLESE is the Digital Library for Earth System Education, a geoscience community resource that supports teaching and learning about the Earth system. It is funded by the National Science Foundation and is being built by a community of educators, students, and scientists to support Earth system education at all levels and in both formal and informal settings.