I did not know there was a name for joining a word or a phrase without spaces . . .
CamelCase (also spelled camel case) or medial capitals is the practice of writing compound words or phrases in which the words are joined without spaces and are capitalized within the compound — as in "BackColor" or "iMac". The name comes from the uppercase "bumps" in the middle of the compound word, suggestive of the humps of a camel.
