Bodybuilding is training to build muscle for its appearance. Take up bodybuilding, a bodybuilding contest, years of bodybuilding.
It is judged on size, symmetry and definition rather than on anything the body can do, which is what separates it from weightlifting. Competitors dehydrate deliberately before a show to make the muscle stand out.
1nounbodybuildingTraining to build muscle for its appearance.
“He took up bodybuilding and spent every evening lifting weights at the gym.”
bodybuilding is a training.
From body + building.
Etymology from Wiktionary, CC BY-SA