ramus

noun
ra·​mus | \ ˈrā-məs How to pronounce ramus (audio) \
plural rami\ ˈrā-​ˌmī How to pronounce rami (audio) \

Definition of ramus

: a projecting part, elongated process, or branch: such as
a : the posterior more or less vertical part on each side of the lower jaw that articulates with the skull
b : a branch of a nerve

First Known Use of ramus

1615, in the meaning defined above

History and Etymology for ramus

New Latin, from Latin, branch — more at ramify

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The first known use of ramus was in 1615

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Cite this Entry

“Ramus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ramus. Accessed 23 Nov. 2020.

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More Definitions for ramus

ramus

noun
ra·​mus | \ ˈrā-məs How to pronounce ramus (audio) \
plural rami\ -​ˌmī How to pronounce rami (audio) \

Medical Definition of ramus

: a projecting part, elongated process, or branch: as
a : the posterior more or less vertical part of the lower jaw on each side which articulates with the skull
b(1) : the upper more cranial branch of the pubis that extends from the pubic symphysis to the body of the pubis at the acetabulum and forms the cranial part of the obturator foramen

called also superior ramus

(2) : the thin flat lower branch of the pubis that extends from the pubic symphysis to unite with the ramus of the ischium in forming the inferior rim of the obturator foramen

called also inferior ramus

c : a branch of the ischium that extends down and forward from the ischial tuberosity to unite with the inferior ramus of the pubis in forming the inferior rim of the obturator foramen

called also inferior ramus

d : a branch of a nerve — see ramus communicans

More from Merriam-Webster on ramus

Britannica.com: Encyclopedia article about ramus

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