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to examine subjects or discuss ideas Much of the book covers ground that will be familiar to Unix programmers.
Etymology: based on the literal meaning of cover ground (to move across an area)
Also, cover the ground or a lot of ground .
1. Go a given extent or considerable distance, especially at a satisfactory speed. For example, She really knows how to cover ground with her studies, or This outfielder covers a lot of ground. [Early 1800s]
2. Deal with or accomplish in a certain way, as in This history text covers the ground quite well. [Late 1800s] Also see cover the field.
cover (the) ground
1. To traverse a given distance with satisfying speed.
2. To deal with or accomplish something in a certain manner: The history course covered a lot of ground in six weeks.