bark

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bark

(bark),
1. The envelope or covering of the roots, trunk, and branches of plants. Barks of pharmacologic significance not listed below are alphabetized under specific names.
2. Synonym(s): cinchona
Farlex Partner Medical Dictionary © Farlex 2012

bark

Botany
The outer covering of trees and some plants, which consists of a cuticle (epidermis), outer bark (cortex) and inner bark (fibre).
 
Herbal medicine
(1) China, see there.
(2) Cinchona, see there; Cinchona species.
 
Veterinary medicine
The harsh sound uttered by a dog.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

bark

the outer, living part of a woody stem, consisting of three layers:
  1. an inner layer called secondary PHLOEM, containing the elements of primary phloem plus horizontal ray cells which function in transporting materials across the stem.
  2. a middle layer of cork CAMBIUM, a group of meristematic (dividing) cells originating in the PARENCHYMA cells of the outer stem cortex. As the cells divide, the outer ones develop into cork cells and the inner ones give rise to parenchyma-like tissue.
  3. CORK, an outer region of cells forming a waterproof and protective layer broken only by LENTICELS.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
A dog barking out of fear typically holds its tail low and ears back.
There are lots of ways to diminish barking. Unfortunately, many people try to punish barking.
This is often called demand barking, but in my house, we call it bossy barking.
This way Romeo's barking will not have had its desired effect at causing the stranger to leave.
Don't shout at him to stop barking as he may think that you are excited, too, and are joining in!
Barking Mad is a franchise provider of dog sitting services in the UK.
The visitors were very happy to get a chance to see the barking deer for the first time, which earlier was not available in any zoo across Punjab.
Lord theorizes barking is due to an evolved behavior known as mobbing, a response typically provoked by the approach of a threat.
"Barking definitely affects people's lives,'' said Sgt.
"Postponing Armageddon" has been assigned to Barking Rain Press staff editor Ti Locke.
A prolonged period of pressure following that score saw the Saxons spurn a number of chances as Barking's defence clung on for dear life but a Woodrow penalty gave them a narrow lead for the first time in the match.