different between isthmus vs promontory

English

Etymology

Via Latin isthmus, from Ancient Greek ?????? (isthmós, “neck”), possibly from ???? (eîmi, “to go”). Cognate to Old Norse eið (“isthmus”).

Pronunciation

• IPA^(key): /??s.m?s/
• Rhymes: -?sm?s

Noun

isthmus (plural isthmuses or isthmi)

1. A narrow strip of land, bordered on both sides by water, and connecting two larger landmasses.
2. (anatomy) Any such narrow part connecting two larger structures.
3. (graph theory) An edge in a graph whose deletion increases the number of connected components of the graph.

Derived terms

• isthmoid

Translations

Further reading

• isthmus on Wikipedia.Wikipedia

Latin

Pronunciation

• (Classical) IPA^(key): /?ist?.mus/, [??s?(t?)?m?s?]
• (Ecclesiastical) IPA^(key): /?ist.mus/, [?ist?mus]

Noun

isthmus m (genitive isthm?); second declension

1. isthmus

Usage notes

• Capitalised as Isthmus, it refers to the Isthmus of Corinth.

Declension

Second-declension noun.

Descendants

• ? Catalan: istme
• ? English: isthmus

Further reading

• Isthmus or -os in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• istmus (-os) in Gaffiot, Félix (1934) Dictionnaire illustré Latin-Français, Hachette

English

Etymology

From Medieval Latin pr?montorium, from pr?- + *mine? (“to project or jut”), from Proto-Indo-European *men- (“to stand out”).

Pronunciation

• (UK) IPA^(key): /?p??m.?n.t?i/
• (US) IPA^(key): /?p??m?nt??i/

Noun

promontory (plural promontories)

1. A high point of land extending into a body of water, headland; cliff.

   Synonyms: cliff, headland, hoe

2. (anatomy) A projecting part of the body.
   1. A projection on the sacrum.
   2. A rounded elevation in the tympanum of the ear.

Translations

Further reading

• “promontory”, in Lexico, Dictionary.com; Oxford University Press, 2019–present.