1. Bipedal herbivore having 10 inches of bone atop its head; largest boneheaded dinosaur ever found
   - pachycephalosaur

Derived forms: pachycephalosauruses

Type of: bone-headed dinosaur

Encyclopedia: Pachycephalosaurus

• administratrix
• administrivia
• admirability
• admirable
• admirableness
• admirably
• admiral
• Admiral Byrd
• Admiral Dewey
• Admiral Nelson
• Admiral Nimitz
• ACE inhibitor
• ace of clubs
• ace of diamonds
• ace of hearts
• ace of spades
• acebutolol
• acedia
• acellular
• acellular slime mold
• acellular slime mould
• acentric
• acentric chromosome
• acephalia
• acephalism