expressivity

[ek-spre-siv-i-tee]

ex·pres·siv·i·ty

[ek-spre-siv-i-tee]
noun
1.
the quality or state of being expressive.
2.
Genetics. the degree to which a particular gene produces its effect in an organism.
Compare penetrance.


Origin:
1930–35; < German Expressivität. See expressive, -ity
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Expressivity has a plethora of syllables.
So is pneumonoultramicroscopicsilicovolcanoconiosis. Does it mean:
an obscure term ostensibly referring to a lung disease caused by silica dust, sometimes cited as one of the longest words in the English language.
the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
Collins
World English Dictionary
expressivity (ˌɛksprɛˈsɪvɪtɪ)
 
n
1.  (esp of a work of art) the quality of being expressive
2.  genetics the strength of the effect of a gene on the phenotype

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