Bipedal means walking on two legs. A bipedal dinosaur, bipedal locomotion, became bipedal.
It freed the hands, which is why it matters so much in human evolution, and the trade is a spine and a pelvis carrying loads they were not shaped for. Many dinosaurs were bipedal, and birds still are.
1adjectivebipedalWalking on two legs.
“Chimpanzees can walk upright for a short while, but they are not fully bipedal.”
bipedal is a quality.
Proto-Indo-European
*ped-
French
pédale
English
pedal
English, today
bipedal
From biped + -al. by surface analysis, bi- + -pedal. pedal Borrowed from French pédale. French pédale, itself borrowed from Italian pedale, from Latin pedālis. by surface analysis, ped- + -al.
Etymology from Wiktionary, CC BY-SA