1. existing or occurring beneath the ocean floor
Usage: geological; scientific

Examples

• Scientists discovered suboceanic rock formations deep beneath the Pacific.
• The suboceanic sediment layers revealed millions of years of geological history.
• Drilling equipment was used to extract suboceanic core samples.
• The research team studied suboceanic volcanic activity.
• New species were found in suboceanic cave systems.
• The suboceanic crust differs significantly from continental rock.