Taken from CamelCase and the one-humped domesticated camel (Camelus dromedarius), widely used as a beast of burden in northern Africa and western Asia. (Also called: Arabian camel :-)
Do you mean Wordswithastartingcapitalletter or wordsWithAStartingCapitalLetter?
Personally; I already use wordsWith..., but only in Wikis (where CamelCase is used to generate HTML) when I want an easy way of doing the '~CamelCase' or 'nolink:CamelCase' markup that is being documented in WikiMarkupStandard. It just never occured to be to call this DromedaryCase. -- HansWobbe