from The American Heritage® Dictionary of the English Language, 4th Edition
- n. One that sells goods or commodities to consumers electronically, as over the Internet.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A company that does business via electronic media, especially via the Internet
e- + (re)tailer.(American Heritage® Dictionary of the English Language, Fourth Edition)
Blend of e- and retailer (Wiktionary)