abyssal

1. See plutonic. 2. Pertaining to the abyssal zone.

Of the unfathomable depths of the sea; for the bathymetric zone beyond and below the bathyal zone.

Of the illimitable depths of the earth; for very deep-seated igneous rocks.

Related terms:

• abyssal rock
• abyssal injection
• abyssal-benthic
• abyssal floor
• abyssal gap
• abyssal zone
• plutonic
• abyssal hill
• Sohm Abyssal Plain
• abyssal theory