Comment by hunter2_

Not unlike how in the trades, a tee is T-shaped, a wye is Y-shaped, a delta is Δ-shaped. Spelled-out letters aren't always geometric metaphors, but it's a thing.

Then you've got the first syllable of Ω (omega) being a homophone of Ohm, for what that's worth. From there we have ℧ (mho) for conductance... It's all quite clever. But I digress; I'll get back to emceeing and deejaying, cueing these elpees after a quick pee, okay?