"First module" refers to the initial part or component of a larger system or program. It is the foundation on which the rest of the system is built upon. Full definition
«The Majorana Demonstrator: First module of germanium detectors comes online.» (sciencedaily.com)
Construction of the million - square foot structure is expected to begin this summer and First Solar hopes that the plant will be producing its first modules by the end of 2019. (pv-magazine-usa.com)
The first modules have rolled off the line in Ohio as part of First Solar's $ 1.4 billion dollar bet on its large - format Series 6. (pv-magazine-usa.com)