Ana, in anarobic, means the opposite of aerobic, which is the use of oxygen in stimulating the circulatory system. (No dictionary yet.) Anarobic is the excess of stimulation, suggesting that ana is excess or external. Logos is study, logy the process of studying. So analogy is external to study, or--more likely--external study. Not far off from the sense we get when the redcross knight slays the dragon to save una's mother and father. Does it make sense for the analog clock, or analog music? Okay now let's check that lame excuse for the expensive and difficult-to-access oed.