The joining of two words that are capitalized. Because there is a capitalletter in the middle of the newly formed word, spaces are unnecessary for fluent reading. Pioneered by Maxis.
Some people would say camelcase, but actually camels only have humps in the middle likeThis. People are now calling bi-capitalisation PascalCase, cos in the old days we used to use it for names of things in the computer language called Pascal.