Yesterday's New York Times Magazine (page 25) included an interview with Natalie Jeremijenko, a "technoartist".
Interviewer: You named your baby E. Was it data-derived? Was there a consonant in the running?
Natalie: E is an interactive name. She gets to decide what she stands for. Though that's really a post-rationalization; we had a lot of E names, but we couldn't agree, so we just stopped with E. She'll probably decide on something quite normal, but in the interim it's E for entropy.
Best,
-ken kahn