umbo

See also: ụm bò

English

Etymology

Borrowed from Latin umbo.

Pronunciation

• Rhymes: -ʌmbəʊ

Noun

umbo (plural umbones or umbos or umboes)

1. (biology) A boss, or rounded elevation, or a corresponding depression, in a palate, disk, or membrane. For example the umbo in the integument of the larvæ of echinoderms or in the tympanic membrane of the ear.
2. (zoology) One of the lateral prominences just above the hinge of a bivalve shell.
3. (mycology) A bump or protrusion on the top of the cap.
4. (historical) The boss of a shield, at or near the middle, and usually projecting, sometimes in a sharp spike.
   • 1786: It is thirteen inches diameter, made of wood covered with leather, and an iron plate decorated with nails and mouldings; the boss or umbo projects four inches. — Francis Grose, A Treatise on Ancient Armour and Weapons, page xii.

Derived terms

• umbonal
• umbonic

See also

• boss

Anagrams

• ombu

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Latin

Etymology

From Proto-Indo-European *h₃m̥bʰ-. Cognate with Proto-Germanic *ambô (“belly; paunch”).

Pronunciation

• (Classical Latin) IPA^(key): /ˈum.boː/, [ˈʊmboː]
• (modern Italianate Ecclesiastical) IPA^(key): /ˈum.bo/, [ˈumbo]

Noun

umbō m (genitive umbōnis); third declension

1. boss (of a shield etc.)
2. elbow (or similar projecting part)

Declension

Third-declension noun.

Case	Singular	Plural
Nominative	umbō	umbōnēs
Genitive	umbōnis	umbōnum
Dative	umbōnī	umbōnibus
Accusative	umbōnem	umbōnēs
Ablative	umbōne	umbōnibus
Vocative	umbō	umbōnēs

Descendants

• Translingual: Umbonium (generic name)
• English: umbo
• Italian: umbone

References

• “umbo”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• “umbo”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• umbo in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
• “umbo”, in Harry Thurston Peck, editor (1898), Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers
• “umbo”, in William Smith et al., editor (1890), A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin

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Swahili

Noun

umbo (ma class, plural maumbo)

1. shape (appearance or outline)