univalve
noun
uni·valve ˈyü-ni-ˌvalv 
1
: a mollusk with a shell consisting of one valve
especially : gastropod
2
: the shell of a univalve
univalve adjective
Word History
First Known Use
1668, in the meaning defined at sense 1
- subphyla
- subphylar
- subphylum
- subplacenta
- subplantigrade
- subplate
- subplinth
- subplot
- subplots
- subplow
- subpoena
- subpoena ad tes
- subpoena ad testificandum
- subpoena du
- subpoena duces tecum
- subpoenaed
- subpoenaing
- subpoenas
- subpolar
- subpopulation
- subpopulations
- subport
- subpostmasters
- subpotencies
- subpotency