sub-bottom
/ˌsʌbˈbɒtəm/noun
Originally: a layer or structure that lies below the base, floor, or lowest point of something else. Later chiefly: specifically the rock strata beneath the sea bed.
adjective
Below the lowest level or bottom of something, (now especially) below the sea bed.
Origin
Late 19th century. From sub- + bottom.
- somewhen
- somewhere
- some —— are more equal than others
- somite
- Somme
- Somme, Battle of the
- sommelier
- sommer
- somnambulant
- somnambulantly
- somnambulism
- somnambulist
- somnambulistic
- somnambulistically
- somniferous
- somnific
- somnolence
- somnolency
- somnolent
- somnolently
- somoni
- Somoza
- so much as
- so much for
- so much so that