euconeadj.
/ˈjuːkəʊn/ Entomology.
Of the eyes of certain insects: having a well-developed or true cone (see quots.).
ΚΠ
1885 S. J. Hickson in Q. Jrnl. Microsc. Sci. XXV. 230 The crystalline cone of the ‘eucone eyes’.
1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 502 The vitreous cells..are reduced to feeble remnants inclosing a solid crystalline cone composed of 2–5 parts, the eucone eyes of other Insecta... In pseudocone and eucone eyes the seven cells are grouped round a central axis.
1957 O. W. Richards & R. G. Davies Imms's Gen. Textbk. Entomol. (ed. 9) 104 Eucone eyes. In eyes of this type each ommatidium contains a true crystalline cone, which is a hard refractive body formed as an intracellular product of the cone cells.
This entry has not yet been fully updated (first published 1933; most recently modified version published online June 2018).
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adj.1885- spectacle-blurred
- spectacle-case
- spectacle-frame
- spectacle-glass
- spectacle-less
- spectacle-like
- spectacle-maker
- spectacle-mark
- spectacle-seller
- spectacle-shaped
- spectacle-user
- spectacle-wiper
- spectaclebestrid
- spectacleblurred
- spectaclecase
- spectacled
- spectacled alligator
- spectacled bear
- spectacled cayman
- spectacled cobra
- spectacled eider
- spectacled guillemot
- spectacled salamander
- spectacled serpent
- spectacled snake