Definition of hemocyanin in English:


Syllabification: he·mo·cy·a·nin
Pronunciation: /ˌhēməˈsīənən
(British haemocyanin)


  • A protein containing copper, responsible for transporting oxygen in the blood plasma of arthropods and mollusks.
    More example sentences
    • It is intriguing that crustaceans seem to express either hemoglobin or hemocyanin but not both proteins.
    • One grasshopper embryo has a protein that closely resembles hemocyanin in sequence, but no oxygen binding studies to confirm its function have yet been done.
    • The ontogeny of crustacean hemocyanin, the copper-based oxygen transport protein, has been studied in relatively few species, including Nephrops norvegicus and Homarus americanus.


mid 19th century: from hemo- 'of blood' + cyan + -in1.

More definitions of hemocyanin

Definition of hemocyanin in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day maelstrom
Pronunciation: ˈmālˌsträm
a powerful whirlpool in the sea