A unit of electrical conductance equal to one billionth of a mho (the reciprocal of an ohm).
Formed by combining the prefix 'ab-' (from Latin, meaning 'away from' or 'one billionth') with 'mho,' which is 'ohm' spelled backward, coined in 1913 to represent the reciprocal unit of resistance.
Physicists named the unit 'mho' by simply reversing 'ohm'—one of the most cheeky naming conventions in science! The 'ab-' prefix means it's one billionth of that unit, following a naming system that mirrors the cleverness of the original.
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