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n. pl. breg·ma·ta (-mə-tə)
The junction of the sagittal and coronal sutures at the top of the skull.

[Latin, top of the head, from Greek.]

breg·mat′ic (-măt′ĭk) adj.
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.


n, pl -mata (-mətə)
(Anatomy) the point on the top of the skull where the coronal and sagittal sutures meet: in infants this corresponds to the anterior fontanelle
[C16: New Latin from Greek: front part of the head]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈbrɛg mə)

n., pl. -ma•ta (-mə tə)
the place on the top of skull where the frontal bone and parietal bones join.
[1570–80; < Greek: front of the head]
breg•mat′ic (-ˈmæt ɪk) breg′mate (-meɪt) adj.
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.bregma - the craniometric point at the junction of the sagittal and coronal sutures at the top of the cranium
craniometric point - a landmark on the skull from which craniometric measurements can be taken
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
1): MBN, midpoint between the bregma and nasion; AB, 1 cm anterior to the bregma; B, bregma; LB, 1 cm to the left of the bregma; RB, 1 cm to the right of the bregma; PB, 1 cm posterior to the bregma; MBI, midpoint between the bregma and inion; I, inion; LTL, left temporal line; and RTL, right temporal line (the cranial thickness at the temporal line was measured at the site of intersection between the frontal plane and temporal line).
KA was infused with a 5 [micro]L Hamilton syringe over a 2-min period according to the following coordinates: SNc (n=27): -4.3 mm posterior to bregma and 2.2 mm from the midline, with infusions to a depth of 7.4 mm from the skull surface (0.25 [micro]L per site) (19).
Six sections per animal were selected with 150 [micro]m interval according to anatomical landmarks corresponding to −1.46 and −2.46 mm posterior to the bregma with a reference to the mouse brain atlas.[24] As previously described,[25] in short, the sections were treated with 10% normal donkey serum (in 0.05 mol/L PBS) for 30 min and incubated with rat anti-BrdU (1:200, BioSource International, Camarillo, CA, USA) and goat anti-DCX (1:500, Santa Cruz Biotechnology, Santa Cruz, CA, USA) for 12 h at 4[degrees]C.
Grafts were found at AP coordinates between 0.7 and -0.4 relative to the bregma. Due to this considerable size, at least three sections were used from each animal.
For intraventricular injection, the coordinates of the injections were as follows: anteroposterior (AP) -0.7 mm; mediolateral (ML) -1.7 mm from the bregma; and depth, 5 mm from the skull surface [8].
To overexpress [alpha]-syn, recombinant adeno-associated viral (rAAV) vector containing human [alpha]-syn gene, SNCA, (10 [micro]g/10 [micro]L/rat) was injected into the left lateral cerebral ventricle using the following coordinates adapted from the rat brain atlas: AP: -0.8 mm, ML: -1.5 mm, and DV: -3.6 mm from the bregma, midline, and skull surface, respectively.
Briefly, the optimal stimulation site was 3.0-5.0 mm rostral to bregma and 2.0-4.0 mm lateral from the midline (shown as the supplementary Figure 1).
A stainless steel needle (0.4 mm diameter) was inserted through a small burr hole on the right side of the skull, and the needle tip was placed in the right medial forebrain bundle (4.5 mm posterior to the bregma, 1.2 mm lateral to the sagittal suture, and 8.5 mm ventral to the periosteum surface) according to the atlas of Paxinos and Watson [13].
A burr hole was made, and a 30-gauge needle was inserted through the burr hole into the striatum (coordinates: 0.2 mm posterior, 5.0 mm ventral, and 3.0 mm lateral to the bregma).
All sections along the entire dorsal/ventral axis of the hippocampus that contained the DG subregion (i.e., from 1.34 mm posterior to the bregma to 3.52 mm posterior to the bregma [62]) were used for the analysis, resulting in 10-12 DG-containing sections per brain.
Craniotomy was carried out on parietal bones, by drilling round holes 2 mm in diameter, with coordinates: 2-2,5 mm posterior to the bregma and 2 mm lateral to the sagittal suture, and 10,5 mm posterior to the bregma and 1-1,5 mm lateral to the sagittal suture [6].
A small hole was drilled in the skull over the CnF according to the stereotaxic coordinates of the Rat Brain in Stereotaxic Coordinates by Paxinos and Watson (7.6-8.5 mm caudal to the bregma, 1.7-2.2 mm lateral to the midline suture, and 5.5-6.2 mm ventral from the bregma).