biconicaladj.
Similar in shape to two cones placed base to base.
ΘΚΠ
the world > space > shape > curvature > curved three-dimensional shape or body > [adjective] > two cones base-to-base
dice-box1841
biconical1870
1870 G. Rolleston Forms Animal Life Introd. 71 The biconical cavity thus formed.
1875 Encycl. Brit. III. 775/1 Eggs of the Grebes..which also have both ends nearly alike but pointed, are so wide in the middle as to present a biconical appearance.
1928 V. G. Childe Most Anc. East viii. 191 Biconical faceted beads.
1963 H. N. Savory in I. L. Foster & L. Alcock Culture & Environment iii. 42 The biconical Cinerary Urn of Hilversum affinity which accompanied the primary burial in the round cairn.
Derivatives
biconically adv.
ΚΠ
1881 Jrnl. Linn. Soc. 15 No. 87. 390 Shell..biconically fusiform.
This entry has not yet been fully updated (first published 1933; most recently modified version published online June 2019).
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adj.1870