an I-beam having flanges the width of the web.
a rolled steel joist or girder with a cross section in the form of a capital letter H Compare I-beam
See Dirac’s constant.
- Hb as
Hb AS abbr. hemoglobin A and hemoglobin S (heterozygous state) (the sickle cell trait)
abbreviation (in Canada) 1. Hudson’s Bay Company
- Hb c
Hb C abbr. hemoglobin C
antibody to the hepatitis B core antigen