The article takes about 66% of its content before it actually explains why "Majorana" -- from the theoretician Ettore Majorana:
> So far the only known particles that are their own antiparticles are all bosons, particles that often carry force or mediate interactions, such as the photon, the pi-zero, or the Z. Ettore Majorana, a brilliant Italian theoretician who had a brief career in the 1920s and 30s but vanished mysteriously at the age of 32, was the first to propose that some fermions, particles of matter, might also be their own antiparticles.
> So far the only known particles that are their own antiparticles are all bosons, particles that often carry force or mediate interactions, such as the photon, the pi-zero, or the Z. Ettore Majorana, a brilliant Italian theoretician who had a brief career in the 1920s and 30s but vanished mysteriously at the age of 32, was the first to propose that some fermions, particles of matter, might also be their own antiparticles.
https://en.wikipedia.org/wiki/Ettore_Majorana