pelvis

[pel-vis]
noun, plural pelvises, pelves [pel-veez] . Anatomy, Zoology.
1.
the basinlike cavity in the lower part of the trunk of many vertebrates, formed in humans by the innominate bones, sacrum, etc.
2.
the bones forming this cavity.
3.
the cavity of the kidney that receives the urine before it is passed into the ureter.

Origin:
1605–15; < Neo-Latin; Latin: basin; akin to Greek pellís bowl

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World English Dictionary
pelvis (ˈpɛlvɪs)
 
n , pl -vises, -ves
1.  the large funnel-shaped structure at the lower end of the trunk of most vertebrates: in man it is formed by the hipbones and sacrum
2.  the bones that form this structure
3.  any anatomical cavity or structure shaped like a funnel or cup
4.  short for renal pelvis
 
[C17: from Latin: basin, laver]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

pelvis
1615, "basin-like cavity formed by the bones of the pelvic girdle," from Mod.L., from L. pelvis "basin, laver," Old L. peluis "basin," from PIE *pel- "container" (cf. Skt. palavi "vessel," Gk. pelex "helmet," pelike "goblet, bowl," O.N., O.E. full "cup").
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

pelvis pel·vis (pěl'vĭs)
n. pl. pel·vis·es or pel·ves (-vēz)

  1. A basin-shaped structure of the vertebrate skeleton, composed of the innominate bones on the sides, the pubis in front, and the sacrum and coccyx behind, that rests on the lower limbs and supports the spinal column.

  2. The cavity formed by this structure.

  3. A basinlike or cup-shaped anatomical cavity.

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
pelvis   (pěl'vĭs)  Pronunciation Key 
Plural pelvises or pelves (pěl'vēz)
The basin-shaped structure in vertebrate animals that joins the spine and lower or hind limbs. In primates, the pelvis is composed of the two hipbones joined to the sacrum. It contains, protects, and supports the intestines, bladder, and internal reproductive organs.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary

pelvis definition


The bowl-shaped group of bones connecting the trunk of the body to the legs and supporting the spine. The pelvis includes the hip bones and the lower part of the backbone.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

pelvis

in human anatomy, basin-shaped complex of bones that connects the trunk and legs, supports and balances the trunk, and contains and supports the intestines, urinary bladder, and internal sex organs. The pelvic girdle consists of paired hipbones, connected in front at the pubic symphysis and behind by the sacrum; each is made up of three bones-the blade-shaped ilium, above and to either side, which accounts for the width of the hips; the ischium, behind and below, on which the weight falls in sitting; and the pubis, in front. All three unite in early adulthood at a triangular suture in the acetabulum, the cup-shaped socket that forms the hip joint with the head of the femur (thighbone). The ring made by the pelvic girdle functions as the birth canal in females. The pelvis provides attachment for muscles that balance and support the trunk and move the legs, hips, and trunk. In the infant the pelvis is narrow and nonsupportive. As the child begins walking, the pelvis broadens and tilts, the sacrum descends deeper into its articulation with the ilia, and the lumbar curve develops.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Also, there is another triceratops pelvis with parts ripped off, indicating t
  rex ate all that it got it's mouth around.
The research is based on a dinosaur pelvis that contains a single pair of
  shelled eggs inside the body cavity.
The pelvis decoupled from the spine, allowing the tail a broader range of
  vertical motion.
Fragments of a silk handkerchief were found next to the pelvis of one of the
  sailors in the turret.
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