Explanation:

Major and Minor Relief Features in the Oceans:
The relief features in the oceans can be broadly classified into major and minor relief features. Major relief features are large-scale formations such as oceanic ridges, trenches, and abyssal plains. Minor relief features are smaller in size and include seamounts, atolls, and guyots.

Definition of Minor Relief Features:
Minor relief features are underwater topographic formations that are less extensive than major relief features. They are typically found in the deep ocean basins and can vary in size and shape.

Seamount:
- Seamounts are underwater mountains that rise from the seafloor but do not reach the surface.
- They are volcanic in origin and can be either active or dormant.
- Seamounts are characterized by steep slopes and can vary in height.
- They provide habitats for a diverse range of marine life.

Atoll:
- Atolls are circular or oval-shaped coral reefs that encircle a lagoon.
- They are typically found in tropical regions and are formed on the rim of submerged volcanic calderas.
- Atolls are composed of coral skeletons and are often associated with islands or submerged banks.
- They provide important habitats for marine biodiversity.

Oceanic Deep:
- Oceanic deeps are extremely deep areas in the ocean that are characterized by their depth.
- They are usually located in trenches or basins and can reach depths of several kilometers.
- Oceanic deeps are often associated with tectonic activity, such as subduction zones.
- They are important for studying deep-sea ecosystems and geological processes.

Guyot:
- A guyot is a flat-topped seamount that has been eroded and subsided below sea level.
- Guyots are typically found in older oceanic crust and are remnants of ancient volcanic activity.
- They have a distinct morphology with a flat summit and steep sides.
- Guyots provide valuable insights into past geological processes and can support diverse marine ecosystems.

Conclusion:
Among the given options, the oceanic deep is not a minor relief feature but rather a term used to describe the deep areas in the ocean that are characterized by their depth. The other options, seamount, atoll, and guyot, are all examples of minor relief features in the oceans.