river mussel
noun
Any of various large freshwater mussels constituting the family Unionidae, especially of the genera Unio and Pseudanadonta.
Origin
Mid 17th century.
- per mil
- per mill
- permillage
- per mille
- permineralised
- permineralization
- permineralize
- permineralized
- perminvar
- permis de sejour
- permis de sejours
- permis de séjour
- permissibility
- permissible
- permissible dose
- permissibleness
- permissibly
- permission
- permissioned
- permission marketing
- permissive
- permissive action link
- permissive bill
- permissive crossing
- permissively