The term 'conductance unit of' can be broken down into four parts: ABMHO (5 letters), MHOS (4 letters), OHM (3 letters), and ERG (3 letters). ABMHO stands for 'Absolute Magnetic Homogeneity Oscillator', which is a device used to measure the magnetic field of a material. MHOS stands for 'Magnetic Homogeneity Oscillator System', which is a system that uses ABMHO to measure the magnetic field of a material. OHM stands for 'Ohm', which is the SI unit of electrical resistance. ERG stands for 'ERG', which is the SI unit of energy. Together, these four terms form the 'conductance unit of', which is a measure of the ability of a material to conduct electricity.