Hb

¹ American

Symbol, Biochemistry.

hemoglobin.

HB ² American

abbreviation

hard black: a designation for a graphite pencil of medium hardness.
Brinell hardness number.
U.S. Government. House Bill.

h.b. ³ American

abbreviation

Football.

halfback.

HB ¹ British

symbol

hard-black: denoting a medium-hard lead Compare H B

"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

Hb ² British

symbol

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

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Low values of red blood cell count, or RBC, hemoglobin, or Hb, and hematocrit, or HCT, would indicate that the patient is suffering from anemia.

From Salon • Feb. 7, 2024

Thalassemia is a rare genetic disease caused by a defect in either the alpha or the beta subunit of Hb.

From Textbooks • Jun. 9, 2022

As a result, oxygenated arterial blood where the Hb is carrying four oxygen molecules is bright red, while venous blood that is deoxygenated is darker red.

From Textbooks • Jun. 9, 2022

The oxygen dissociates from the Hb molecule, shifting the oxygen dissociation curve to the right.

From Textbooks • Jun. 9, 2022

Td is the office call of young Dailey, Hb of Barker, and Jb of Master Bailey.

From Harper's Round Table, August 6, 1895 by Various

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023