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haemocyanin

British  
/ ˌhiːməʊˈsaɪənɪn /

noun

  1. a blue copper-containing respiratory pigment in crustaceans and molluscs that functions as haemoglobin

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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Experience has shown that haemocyanin, a protein derived from keyhole limpets, is particularly effective for this purpose, so that was the one the team chose.

From Economist • Aug. 17, 2017

Another copper-containing pigment is haemocyanin, which in the oxidized state gives a blue colour to the blood of various Mollusca and Arthropoda.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 "Cockaigne" to "Columbus, Christopher" by Various

The same compound occurs in all true vertebrata, and in the blood-fluid of the worm; in the crayfish a similar substance, haemocyanin, which when oxygenated is blue, and when deoxydized colourless, discharges the same function.

From Text Book of Biology, Part 1: Vertebrata by Wells, H. G. (Herbert George)

The blood contains the usual amoeboid corpuscles, and a diffused colouring matter—the haemocyanin of Fredericque—which has been found also in the blood of Helix, and in that of the Arthropods Homarus and Limulus.

From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" by Various

The blood-corpuscles are large amoebiform cells, and the blood-plasma is coloured blue by haemocyanin.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 3 "Apollodorus" to "Aral" by Various