Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
 noun Any of the spatially extended mathematical objects of zero or more dimensions used in string theory. A onedimensional brane, referred to as a “1brane,” is a string.
from Wiktionary, Creative Commons Attribution/ShareAlike License.
 noun physics A hypothetical object extending across a number of (often specified) spatial
dimensions , withstrings instring theory seen as onedimensional examples.
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/ShareAlike License
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Examples

This treatment, of course, assumes the recovery of the Kerr metric in braneworlds which we have found to the first order in the ratio of the brane separation to the radius of the AdS$_5$, $ (ell/r) $.

So what has transpired is that there is now the 0brane, which is a field at a point.

So what has transpired is that there is now the 0brane, which is a field at a point.

The brane is a distinguished submanifold (the skin) in the higherdimensional space.

This submanifold is called the brane (as in membrane).

This submanifold is called the brane (as in membrane).

More ambiguous is the view from the other side of the "brane" which verifies the father's lifelong quest, but simultaneously seems detached from the central theme.
REVIEW: The Solaris Book of New Science Fiction, Volume 3 edited by George Mann

One example, he said, is to confine all the forces of our universe to a fourdimensional plane known as a membrane, or "brane," which is sandwiched between other branes.

Our spacetime cosmology is associated with a D3brane which is evolving in the so called Mtheory bulk.
If We Live in a Multiverse, How Many Are There?  Universe Today

Even to speak of the future was to create another "brane," another branch of the great multiversal tree.
skipvia commented on the word brane
From Wikipedia:
In theoretical physics, a membrane, brane, or pbrane is a spatially extended, mathematical concept that appears in string theory and its relatives (Mtheory and brane cosmology). The variable p refers to the spatial dimension of the brane. That is, a 0brane is a zerodimensional pointlike particle, a 1brane is a string, a 2brane is a "membrane", etc. Every pbrane sweeps out a (p+1)dimensional world volume as it propagates through spacetime.
February 21, 2008
fbharjo commented on the word brane
in the samebranevein?
February 13, 2014