different between rachis vs dorsum

English

Alternative forms

• rhachis

Etymology

From New Latin rachis, from Ancient Greek ????? (rhákhis, “spine, ridge”).

Pronunciation

• (UK, US) IPA^(key): /??e?k?s/

Noun

rachis (plural rachises or rachides)

1. (obsolete, zoology, anatomy) The spinal column, or the vertebrae of the spine. [17th-19th c.]
2. (zoology) An anatomical shaft or axis in a marine invertebrate. [from 18th c.]
3. (ornithology) The central shaft of a feather. [from 19th c.]
4. (botany) The main shaft of either a compound leaf, head of grain, or fern frond. [from 19th c.]

Usage notes

• The plural form rachides is based on a mistaken impression of the Ancient Greek stem.

Translations

References

• rachis at OneLook Dictionary Search
• rachis in The Century Dictionary, New York, N.Y.: The Century Co., 1911.

Anagrams

• Charis, Sirach, chairs

English

Etymology

From Latin dorsum.

Noun

dorsum (plural dorsa)

1. The back of the tongue, used for articulating dorsal consonants.
2. The top of the foot or the back of the hand.
3. (anatomy) The back or dorsal region on the surface of an animal.
4. (astrogeology) A ridge on a hill, or on the surface of a planet or moon.
5. (astronomy) Theta Capricorni, a star on the back of the Goat

Synonyms

• (back of an animal): back

Related terms

• dorsal / dorsumal

Translations

References

• dorsum in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
• dorsum on Wikipedia.Wikipedia

Anagrams

• dromus, dumsor

Latin

Alternative forms

• *dossum

Etymology

From Proto-Italic *dorsom, with no known cognates in any other Indo-European languages. Has been linked to deorsum, but their contemporaneous use suggests that one was not a phonetic development of the other.

Pronunciation

• (Classical) IPA^(key): /?dor.sum/, [?d??rs????]
• (Ecclesiastical) IPA^(key): /?dor.sum/, [?d??rsum]

Noun

dorsum n (genitive dors?); second declension

1. (anatomy) back, part of the body between the neck and buttocks
2. (figuratively) ridge, summit

Declension

Second-declension noun (neuter).

Antonyms

• venter

Derived terms

• dors?lis
• dorsualia

Descendants

References

• dorsum in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• dorsum in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• dorsum in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
• dorsum in Gaffiot, Félix (1934) Dictionnaire illustré Latin-Français, Hachette