The letter k was a favorite of Eastman's; he is quoted as saying, "it seems a strong, incisive sort of letter."[24]
He and his mother devised the name Kodak with an Anagrams set. Eastman said that there were three principal concepts he used in creating the name: it should be short, easy to pronounce, and not resemble any other name or be associated with anything else.[25]
It has also been suggested that Kodak originated from the suggestion of David Houston, a fellow photographic inventor who held the patents to several roll film camera concepts that he later sold to Eastman.[25] Houston, who started receiving patents in 1881, was said to have chosen Nodak as a nickname of his home state, North Dakota (NoDak).[26][27] This is contested by other historians, however, who cite that Kodak was trademarked before Eastman bought Houston's patents.[28]