The term ELECTRICAL CONDUCTANCE UNIT can be abbreviated as ABMHO (5 letters) and MHO (3 letters). Electrical conductance is a measure of the ability of a material to conduct an electric current. The unit of electrical conductance is the mho, which is also known as the siemens. The mho is the reciprocal of the ohm, which is the unit of electrical resistance. The abbreviation MHO stands for 'mho' and ABMHO stands for 'absolute mho'.