different between operculum vs onycha

English

Etymology

Borrowed from Latin operculum.

Noun

operculum (plural opercula)

1. (zoology) A covering flap in animals, such as a gill cover.
   • 2017, Susannah Lydon, The Guardian, 18 January:

     Hyoliths […] have a small, conical calcium carbonate shell, with a lid called an operculum.

2. (botany) The lidlike portion of a moss sporangium or of a fruit that detaches to allow the dispersal of spores or seeds.
3. (dentistry) A gum flap covering (part of) a partially erupted tooth, usually a wisdom tooth.
4. A structure which serves as a cover or lid.
   • 1901, H. G. Wells, The First Men in the Moon, chapter IX, page 95

     I lifted the circular operculum from its place and laid it carefully on the bale.

5. This term needs a definition. Please help out and add a definition, then remove the text {{rfdef}}.

Related terms

• opercle

Derived terms

• operculitis
• preoperculum
• interoperculum
• suboperculum

Translations

Latin

Etymology

From operi? (“I close”) +? -culum.

Pronunciation

• (Classical) IPA^(key): /o?per.ku.lum/, [??p?rk??????]
• (Ecclesiastical) IPA^(key): /o?per.ku.lum/, [??p?rkulum]

Noun

operculum n (genitive opercul?); second declension

1. cover, covering

Declension

Second-declension noun (neuter).

Descendants

• ? English: opercle, operculum
• ? French: opercule
• ? Italian: opercolo
• ? Portuguese: opérculo
• ? Spanish: opérculo

References

• operculum in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• operculum in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• operculum in Gaffiot, Félix (1934) Dictionnaire illustré Latin-Français, Hachette
• operculum in Harry Thurston Peck, editor (1898) Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers

English

Etymology

Borrowed from Latin onycha.

Noun

onycha (uncountable)

1. (obsolete) the operculum of kinds of strombus or muricid, smoked as an ingredient in the Mosaic incense and pre-modern medicine
2. (obsolete) The precious stone onyx.

Translations

Latin

Etymology

From Ancient Greek ???? (ónux) standing in the Book of Exodus 30, 34, in the accusative, translating in the Septuaginta  Hebrew ????????? (š???le?).

Noun

onycha f (genitive onychae); first declension (Medieval Latin)

1. onycha, the operculum of kinds of strombus or muricid, smoked ritually and medicinally

   Synonyms: unguis od?r?tus, blatta byzant?na, blatta byzantia, opercula cochle?rum

Declension

First-declension noun.

References

• onycha in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)