† planorbiten.
Origin: Formed within English, by derivation. Etymons: Planorbis n., -ite suffix1.
Etymology: < Planorbis n. + -ite suffix1.
Palaeontology.
Obsolete.
rare.
1890 Planorbite, a fossil species of Planorbis, or some similar planorbine shell.
This entry has been updated (OED Third Edition, June 2006; most recently modified version published online June 2018).