Common Terms. Ecosystem An ecosystem is any geographic area that includes all of the organisms and nonliving parts of their physical environment. An ecosystem can be a natural wilderness area, a suburban lake or forest, or a heavily used area such as a city.
Definition of documentation for English Language Learners. : 1  the documents, records, etc., that are used to prove something or make something official. : 2  written instructions for using a computer or computer program.
Doc (computing) In computing, DOC or doc (an abbreviation of document) is a filename extension for word processing documents, most commonly in the proprietary Microsoft Word Binary File Format. Historically, the extension was used for documentation in plain text, particularly of programs or computer hardware on a wide range of operating systems.