submarginal /sub-märˈji-nəl/

1. Near the margin
2. Below the minimum necessary
3. (of land) that cannot be farmed profitably

• protostars
• protostele
• protosteles
• protostome
• protostomes
• proto team
• Proto team
• Prototheria
• prototherian
• Prototracheata
• prototroph
• prototrophic
• prototrophs
• prototrophy
• prototypal
• prototype
• prototyped
• prototypes
• prototypical
• prototyping
• protoxide
• protoxides
• protoxylem
• protoxylems
• protozoa