a roundish projection or division, as of an organ or a leaf.

1515–25; < Medieval Latin lobus (Late Latin: hull, husk, pod) < Greek lobós, akin to Latin legula lobe of the ear

multilobe, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
lobe (ləʊb)
1.  any rounded projection forming part of a larger structure
2.  any of the subdivisions of a bodily organ or part, delineated by shape or connective tissue
3.  short for ear lobe
4.  Compare radiation pattern any of the loops that form part of the graphic representation in cylindrical coordinates of the radiation pattern of a transmitting aerial
5.  any of the parts, not entirely separate from each other, into which a flattened plant part, such as a leaf, is divided
[C16: from Late Latin lobus, from Greek lobos lobe of the ear or of the liver]

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Word Origin & History

1520s, from M.L. lobus, from L.L. lobus "hull, husk, pod," from Gk. lobos "lobe of the ear, vegetable pod," probably related to Gk. leberis "husk of fruits," from PIE *logwos, from base *lep- "to peel." Extended 1670s to divisions of the brain.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

lobe (lōb)

  1. A rounded projection, especially a rounded, projecting anatomical part, such as the lobe of the ear.

  2. A subdivision of a body organ or part bounded by fissures, connective tissue, or other structural boundaries.

  3. One of the larger divisions of the crown of a tooth, formed from a distinct point of calcification.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
lobe   (lōb)  Pronunciation Key 
  1. A rounded projection, as on a leaf or petal. The leaves of many oak species have prominent lobes.

  2. An anatomical division of an organ of the body. The liver, lungs, and brain are all characterized by lobes that are held in place by connective tissue.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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