Hb

abbr. hard black (pencil-lead).

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noun

a hemoprotein composed of globin and heme that gives red blood cells their characteristic color; function primarily to transport oxygen from the lungs to the body tissues

-

fish have simpler hemoglobin than mammals

• Syn: ↑hemoglobin, ↑haemoglobin

• Hypernyms: ↑hemoprotein, ↑haemoprotein

• Hyponyms: ↑oxyhemoglobin, ↑oxyhaemoglobin

• Substance Holonyms: ↑red blood cell, ↑RBC, ↑erythrocyte

• Substance Meronyms:

↑heme, ↑haem, ↑hematin, ↑haemitin, ↑protoheme, ↑globin, ↑hematohiston, ↑haematohiston

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abbreviation

1. halfback

2. hard black

3. heavy bomber

4. His Beatitude; His Blessedness

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Symbol, Biochem.

hemoglobin.

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abbrev

Hard black (on lead pencils)

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Hb (no period),

hemoglobin.

HB (no periods),

halfback.

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abbr.

■ half board

■ also hb hardback

■ hard black (used in describing a medium grade of pencil lead)

■ the political wing of the Basque separatist organization ETA

Origin:

abbreviation of Basque Herri Batasuna United People