Maximal Independent Set
A maximal independent set is an independent set which is a maximal set, i.e., an independent set that is not a subset of any other independent set.
The generic term "maximal independent set" is unfortunately commonly used to refer to a maximal independent vertex set of a graph even though other types of maximal independent sets (in particular maximal independent edge sets) exist.
See also
Maximal Independent Edge Set, Maximal Independent Vertex SetExplore with Wolfram|Alpha
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Cite this as:
Weisstein, Eric W. "Maximal Independent Set." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/MaximalIndependentSet.html