A series-parallel circuit is also known as a combination circuit.

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When a circuit uses both series and parallel connections, it is categorized as a combination circuit. That’s because it blends the two ways components can be arranged, giving a path for current in sequence in some parts and multiple paths in others. To analyze it, you identify a portion where components are in series or in parallel, replace that portion with its equivalent resistance, and repeat until the whole circuit is reduced to a single resistance. A pure series circuit has all elements in one path with the same current, and a pure parallel circuit has elements across the same two nodes with the voltage the same across them. The term “mixed” is not the standard label for a circuit that contains both kinds of connections; the accepted name for that situation is a combination circuit (also described as series-parallel). So a series-parallel circuit is indeed a combination circuit.