hemocyanin

[hee-muh-sahy-uh-nin, hem-uh-]

noun Biochemistry.

a blue, copper-containing respiratory pigment in the plasma of many invertebrates.

Origin of hemocyanin

First recorded in 1835–45; hemo- + cyan-¹ + -in²

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018