Thanks, Ken.

I have been using these prefixes for decades, and take them for granted.  Thanks for the reminder that this is not common knowledge.

It also reminds me of a question for which I have never found a good answer.  In North America, capacitance, is expressed in uF (micro Farads) or pF (pico Farads).  But nF (nano Farads) is not used. Instead you will see values like 10,000 pF or 0.01 uF.

Go figure.