Minuscule.
That word derives from minuscula, meaning a slightly smaller letter (as in typesetting). (Larger letters are majuscule.) The ideas behind these correspond to major and minor.
Mini derives from miniature, also perhaps from minimum.
Yeah, I know, now look up pedantic.


So let's make some progress: think about the door chime locations. Using relays to, well, relay the switching function, I'll bet you can do this with fewer than six transformers, based on the locations of the door chimes and where the transformers can go. (I've seen Class 2 transformers online in the last two days up to 50 VA, so you can probably put three chimes on a transformer.)

What's the smallest number of transformers you'll need to make this work?