bottommost
Bottommost is an English adjective meaning the lowest in position or the part that lies furthest toward the bottom of something. It serves as the superlative form of bottom and is used to identify the lowest element within a group, set, or object, such as the bottommost shelf, the bottommost layer of sediment, or the bottommost point of a terrain feature.
Bottommost can be used attributively before a noun (the bottommost drawer) or predicatively (the bottommost part
Bottommost is formed from the noun bottom plus the superlative suffix -most. It shares its meaning with
Lowermost, lowest, bottom, basal (in scientific contexts), and occasionally inferior or downwardmost. The choice among these