Star Trek Enterprise Pizza Cutter

The Franz Joseph Blueprints, the book The Making of Star Trek and a handful of Star Trek novels state that NCC is an initialism for "Naval Construction Contract".
In Gene Roddenberry's original Star Trek pitch, the starship is described as a "United Space Ship," and in two episodes of the original series (TOS), Kirk refers to the "United Space Ship Enterprise".
Before Star Trek: The Motion Picture, Paramount had planned a new Star Trek television series to have been named Star Trek: Phase II. Early in the production, Ralph McQuarrie had been hired to redesign the ship. The major feature of the redesign was to replace the cigar-shaped secondary hull with a larger, triangle-shaped section. McQuarrie's design was discarded in favor of keeping the general shape of the ship intact.