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respiratory pigment

Noun CEFR B2

Definitions

any of several coloured metal-containing protein pigments which combine reversibly with oxygen and which are found in the tissues of vertebrates and invertebrates and whose role is to transport oxygen

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
See all B2 English words →

See also

respiratory practitioner respiratory rate respiratory syncytial virus respiratory system respiratory therapist respiratory tract

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