The term "mecha musume" was
first used for a series of figurines produced by the
japanese company Konami. The figures personified old military vehicles, such as tanks and planes, as cute girls. It's not used to refer to a general art style in which the features of historical military warcraft, or more fanciful science fiction mecha designs. The term means,
literally, "mecha girls."
"I love this new
mecha musume show. Badass military
hardware? Uber-moe cute girls? Why not
get both at the same time..."