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2017 Word of the Year

hemocyanin

[hee-muh-sahy-uh-nin, hem-uh-] /ˌhi məˈsaɪ ə nɪn, ˌhɛm ə-/
noun, Biochemistry.
1.
a blue, copper-containing respiratory pigment in the plasma of many invertebrates.
Origin of hemocyanin
1835-1845
First recorded in 1835-45; hemo- + cyan-1 + -in2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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