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a long slender part, such as the diaphysis of a long bone.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


, pl.


(dī-af'i-sis, -sēz), [TA]
An elongated rodlike structure, as the part of a long bone between the epiphysial extremities. The shaft of a long bone, as distinguished from the epiphyses, or extremities, and apophyses, or outgrowths.
Synonym(s): shaft [TA]
[G. a growing between]
Farlex Partner Medical Dictionary © Farlex 2012


1. An elongated rodlike structure, such as the midsection of a long bone.
2. The section of a hair projecting from the surface of the body.
3. The main axis of a feather, especially its distal portion.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


The cylindrical part of penis between the scrotum and head.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.


(shaft) [TA]
An elongated rodlike structure, as the part of a long bone between the epiphysial extremities.
Synonym(s): diaphysis [TA] .
[A.S. sceaft]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


(shaft) [TA]
An elongated rodlike structure.
Synonym(s): diaphysis [TA] .
[A.S. sceaft]
Medical Dictionary for the Dental Professions © Farlex 2012

Patient discussion about shaft

Q. i'm 21 years old, and my penis outer skin covers the shaft. Is it natural to have like that? from my young age the outer skin of my penis covers my shaft, and only a little of the tip is exposed even if i try to pull the skin upwards. Is it natural to have it like that? I've seen in all porn movies and other sex videos that for all those guys the outer skin can be pulled up half the way. Will this affect my sex life?

A. i went through that link. But still i'm not clear. The flash video shown over there is different from what I can see with my penis. In the video the foreskin can be pulled a long way, and the head of the penis is fully exposed. But this doesn't happen with me. Even at erect stage, my head is exposed only a little bit( like in the first part of first picture ). Can someone give more info?

More discussions about shaft
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References in periodicals archive ?
Hand-straightening wood shafting is an art, and there are special tools available to make it easier.
Wood shafting is sold in 5-pound spine increments: 45/50, 50/55, 55/60, and so forth.
In its simplest form, a clamp-type coupling is a cylinder, bored for a snug slip-fit over close tolerance shafting. Slots and clamp-screw locations are machined in such a way as to create individual clamping areas for each shaft.