A hybrid strain of marijuana is a strain that is created by crossing two or more different strains of marijuana. These strains can be pure Sativa, pure Indica, or a combination of both.

Hybrid strains are created with the goal of combining the best characteristics of the parent strains, such as flavor, aroma, and the effects on the body and mind.

Hybrids are created to provide a balance of effects, often to provide both uplifting and energizing effects, as well as relaxing and sedating effects. This can make them more versatile than pure Sativa or Indica strains and provide an unique experience depending on the particular hybrid.

Hybrid strains are often labeled as Indica- or Sativa-dominant, indicating which of the parent strains has a stronger influence on the final product. For example, a hybrid strain that is labeled as "60% Sativa, 40% Indica" indicates that the strain is mostly Sativa-dominant but still has some Indica characteristics.

It's also worth noting that there is a wide range of hybrids and their characteristics can vary widely, So it's a good idea to read the information about the particular strain and its parents to know what to expect from a hybrid.