planoconical
adjEtymology From plano- + conical.
1
Plane or flat on one side, and conical on the other.
- Acutely Conical ; and also , in part , level between both ends or Planoconical.1681, Nehemiah Grew, Musæum Regalis Societatis. Or A Catalogue & Description of the Natural and Artificial Rarities Belonging to the Royal Society and Preserved at Gresham Colledge. […], London: […] W. Rawlins, for the author, →OCLC: