Although previous sci-fi writers had speculated about the development of "replicating" or "duplicating" technology,
[1] the term "replicator" was not itself used until
Star Trek: The Next Generation. In simple terms, it was described as a
24th century advancement from the 23rd century "food synthesizer" seen in
Star Trek: The Original Series. In
Star Trek: The Original Series, food was created in various colored cubes. In
Star Trek: The Animated Series (1974), various types of realistic-looking food could be requested, as in the episode entitled "
The Practical Joker". The mechanics of these devices were never clearly explained on that show. The subsequent prequel series,
Star Trek: Enterprise, set in the 22nd century, featured a "protein resequencer" that could only replicate certain foods, so an actual chef served on board who used a
hydroponic greenhouse where fruits and vegetables were grown. Additionally, that ship had a "bio-matter resequencer" which was used to recycle waste product into usable material.
[2]