Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun   Of a 
material intension orcompression , the ratio of thestrain in the direction of the appliedload to the strainnormal to the load. Abbreviatedν . 
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
Named for Siméon Denis Poisson (1781-1840), French mathematician.
			
		
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