ramus

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ra·mus

 (rā′məs)
n. pl. ra·mi (-mī′)
1. A branch, as of a nerve or blood vessel, or a projecting part, as of a rotifer or crustacean.
2. A bony process extending like a branch from a larger bone, especially the ascending part of the lower jaw that makes a joint at the temple.

[Latin rāmus, branch; see wrād- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

ramus

(ˈreɪməs)
n, pl -mi (-maɪ)
1. (Zoology) the barb of a bird's feather
2. (Zoology) either of the two parts of the lower jaw of a vertebrate
3. (Biology) any part or organ that branches from another part
[C19: from Latin: branch]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ra•mus

(ˈreɪ məs)

n., pl. -mi (-mī).
a small branch, as of a stem, vein, or bone.
[1795–1805; < Latin rāmus branch, twig, bough]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.ramus - the posterior part of the mandible that is more or less verticalramus - the posterior part of the mandible that is more or less vertical
condylion - the craniometric point at the tip of the mandibular condyle
bone, os - rigid connective tissue that makes up the skeleton of vertebrates
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations

ra·mus

n. L. rama, bifurcación, división.
English-Spanish Medical Dictionary © Farlex 2012
References in periodicals archive ?
One tangent was drawn to the posterior border of the ascending ramus and condyle and the other tangent to the lower border of the mandible (Figure 1 and 2).Using a D (protector), the gonial angle traced on the acetate tracing paper was measured to 1 degree accuracy.
The most lateral points of the condylar image and the ascending ramus were connected with a line that was traced between them.
Panoramic radiographic examination revealed a unilocular radiolucent lesion extending from the body of the mandible through to the angle and right ascending ramus, causing displacement of the second molar towards the base of the mandible and the third molar towards the ascending ramus (Figure 2).
Caption: Figure 2: OPG showing large unilateral radiolucencies extending from the 1st permanent molar along the ascending ramus up to the neck of the condyle and involving coronoid process and thinning of the lower border and bowing of angle of mandible.
Shrapnel destroyed the ascending ramus of the right jaw, and another bullet, visible here, struck the left frontal sinus.
It also revealed the parallel-sided anterioposterior borders of the ascending ramus, slender and pointed coronoid process facing upward, thin zygomatic arch and increased bone density between the anterior border of the ascending ramus and the inferior dental canal [Figure 1]f.
Caption: Figure 2: Skull radiograph lateral and anteroposterior views (a, b) showing disproportionate large calvarium with hypoplastic facial bones, small mandible with small ascending ramus, and obtuse mandibular angle (red arrow) and overcrowding of teeth (blue arrow).
Mandibular cases occur in the angle or condyle, followed by the molar area of the mandibular body and ascending ramus. (4) When osteoma is diagnosed one should not discard the possibility of Gardner's syndrome.
75% of tumours originate in ascending ramus and remaining mainly occurs in maxillary region and causes bony deformity.

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