By extension, the word has also come to mean to render a male less of a man, or to make a male feel less of a man by humiliation. This metaphorical usage of the word is much more common than the application of its literal meaning. It can also mean the reduction or removal of force behind a statute or legislation, for example, "the Triennial Act was emasculated by the Cavalier Parliament".
The removal of male (pollen) parts of a plant, largely for controlled pollination and breeding purposes, is also called emasculation.
Doomsday... 328. Paul Rudd Reacts to Possible Avengers ... ‘It’s a Little Emasculating…’. follow us. share ... “I thought, ‘Oh that’s clever, yes I’m Ant-Man.’ But there’s still the part of me that’s like, it’s a little emasculating to have a little tiny chair.
But Rudd himself doesn't seem quite exactly sure how to feel about his tiny-sized chair, jokingly calling it "emasculating" in an appearance on the Tonight Show with Jimmy Fallon.