ocularium

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English

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A frog-mouth helm with a large ocularium (slit for seeing out of).
A harvester, showing its ocularium (raised bump containing eyes).

Etymology

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From Latin oculārium.

Pronunciation

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Noun

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ocularium (plural ocularia)

  1. A slit in a helmet through which the wearer could see.
    • 1901, W. H. Spiller, Catalogue of the Valuable Collection of Armour & Arms Formed by W.H. Spiller ...: Which Will be Sold by Auction by Messrs. Christie, Manson & Woods ... on Wednesday, January 30, 1901, and Following Day, page 47:
      [] A CLOSED HELMET, with blued surface; the skull-piece has a high roped comb, a deep visor pierced with the ocularium, bevor with annular piercings  []
  2. An elevated mound or "turret", found in some arachnids and other creatures, which contains simple eyes (ocelli).
    • 2007, Tone Novak, Harvestmen: The Biology of Opiliones, Harvard University Press, →ISBN, page 202:
      Ocularium with paired armature; area III usually with a pair of spines or tubercles; femur IV entirely straight and unarmed (Figure 4.29a), posterior ozopore absent or much smaller than anterior ozopore (Brazilian Atlantic forest) ...
    • 2000, D. J. Larson, Yves Alarie, Robert Edward Roughley, National Research Council Canada, Predaceous Diving Beetles (Coleoptera: Dytiscidae) of the Nearctic Region, with Emphasis on the Fauna of Canada and Alaska, NRC Research Press, →ISBN, page 865:
      Ocularium [of Hydrocolus paugus] absent (instar I and II) or present (instar III); maxillary cardo present; prementum subrectangular; labial palpomere 2 subcylindrical; antennomere 2 with a secondary seta in instar II and III larvae; legs without natatory setae []

Alternative forms

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Latin

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Adjective

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oculārium

  1. nominative neuter singular of oculārius
  2. genitive plural of oculāris

References

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