HG has various meanings in the Scientific & Educational category. Discover the full forms, definitions, and usage contexts of HG in Scientific & Educational.
Innermost of the planets Greatest angular distance from Sun is about 29deg. Very rarely observable, and then only near sunrise or sunset. Nautical almanac then gives a warning that its appearance may cause it to be mistaken for a star or another planet.
Scientific & EducationalA red pigment that binds oxygen and carbon dioxide molecules and carries them through the bloodstream. An allosteric protein that is the primary oxygen-carrying protein in vertebrates; it also plays a role in the transport of CO2 and H+. A heme protein in erythrocytes; functions in oxygen transport.
Scientific & EducationalLast updated: