pith


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Related to pith: pith helmet

pith

(pith),
1. The center of a hair.
2. The spinal cord and medulla oblongata.
3. To pierce the medulla of an animal with a sharp instrument introduced at the base of the skull.
[A.S. pitha]
Farlex Partner Medical Dictionary © Farlex 2012

pith

(pĭth)
n.
a. The soft inner substance of a feather or hair.
b. The spinal cord.
tr.v. pithed, pithing, piths
To sever or destroy the spinal cord of, usually by inserting a needle into the vertebral canal.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

pith

(pith)
1. The center of a hair.
2. The spinal cord and medulla oblongata.
3. To pierce the medulla of an animal with a sharp instrument introduced at the base of the skull.
[A.S. pitha]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

pith

or

medulla

the core of a DICOTYLEDON stem, containing PARENCHYMA cells that have a storage function.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
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References in periodicals archive ?
A comprehensive analysis of the MC indicated that average initial MC was affected by the tree harvesting season and pith location.
Impact of juvenile wood on hemlock timber drying characteristics
Then 1-inch-thick boards were sawn parallel to the pith from each cant outward to 4 inches from the pith, with the middle board centered on the pith.
Longitudinal shrinkage, kiln-drying defects, and lumber grade recovery of red pine (Pinus resinosa Ait.) from a 125-year-old natural stand and a 57-year-old plantation. (Solid Wood Products)
For certain species, such as plantation teak, a modified sawing pattern could be used to eliminate large objectionable pith centers.
Reducing warp and checking in plantation-grown yellow-poplar 4 by 4's by reversing part positions and gluing in the green condition. (Technical Note)
These measurements were made to obtain the radial variation in the GA from the pith to the bark and to verify measurements made on trees and on logs.
SPIRAL GRAIN ON LOGS UNDER BARK REVEALS TWIST-PRONE RAW MATERIAL
In the end, Pointy Shoes and Pith Helmets is a valuable contribution to the study of Ambonese, Indonesian, and colonial history that fascinates from beginning to end.
Pointy Shoes and Pith Helmets. Dress and Identity Construction in Ambon from 1850 to 1942
The mean value of the TL gradually increased up to the 18th annual ring from the pith, and then it showed an almost constant value (Fig.
Properties of juvenile and mature wood and their effects on the bending properties of lumber in Pinus taeda growing in Tochigi, Japan
After the abovementioned parameters were determined, the effective degradability of DM, NDF, and ADF in whole plant, leaf blade, leaf sheath, stem rind, stem pith, stem node, ear husk, and tassel of corn stover were calculated using the equation described by 0rskov and McDonald (1979) as follows:
Assessment of the nutritive value of whole corn stover and its morphological fractions
Therefore, it appears that the gas production parameters and degradability of sugarcane pith by rumen microbial fractions are influenced by low temperature steam and sulfuric acid treatment, bacterial group generates a larger volume of gas production than fungal or protozoan group and this method had no negative effect on rumen microorganisms.
Fermenting Cell Walls of Processed Sugarcane Pith by Ruminal Bacteria, Protozoa and Fungi
The severity and type of damage lowering the internal quality of log (i.e., color defects and/or decay) were classified into 5 grades: 1 = no damage (no visible color defects or decay); 2 = color defect in pith with a diameter <20 mm (slight color change); 3 = hard rot in pith with a diameter <20 mm (clear color change, usually as a result of chemical reaction or preliminary stage of decay); 4 = hard rot (the wood material dark but still hard, a condition caused by an infection related to a decaying fungus); 5 = soft rot (wood material is dark and soft, and wears away when scratched) (see Schatz et al.
Wood quality of birch (betula spp.) trees damaged by moose
These cores often contain the pith, or center of the log, which doesn't accept pressure treatment as well.
Choosing 4x4s
Pith is cut from the inner spongy tissue of a small tree, Tetrapanax Papyrifera, which is native to south-west China and Taiwan.
Beauty in pursuit of pleasure: 19th-century Chinese export watercolours on pith depict a variety of idealised, attractive women. Ifan Williams traces the sources for these popular images, which appealed to western audiences as representations of the sophistication and exoticism of Chinese civilisation

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