| pachycephala | (n) arboreal insectivorous birds, Syn. genus Pachycephala |
| pachycephalosaur | (n) bipedal herbivore having 10 inches of bone atop its head; largest boneheaded dinosaur ever found, Syn. pachycephalosaurus |
| pachycheilia | (n) an abnormal thickness of the lips |
| pachyderm | (n) any of various nonruminant hoofed mammals having very thick skin: elephant; rhinoceros; hippopotamus |
| pachydermatous | (adj) of or relating to or characteristic of pachyderms, Syn. pachydermic, pachydermous, pachydermal |
| pachyrhizus | (n) small genus of tropical vines having tuberous roots, Syn. genus Pachyrhizus |
| pachysandra | (n) any plant of the genus Pachysandra; low-growing evergreen herbs or subshrubs having dentate leaves and used as ground cover |
| pachytene | (n) the third stage of the prophase of meiosis |
| Pachy- | [ Gr. |
| Pachycarpous | a. [ Pachy- + Gr. |
| Pachycephala | prop. n. A genus of arborial insectivorous birds. |
| Pachydactyl | n. [ Pachy- + dactyl. ] (Zool.) A bird or other animal having thick toes. [ 1913 Webster ] |
| Pachydactylous | a. (Zool.) Having thick toes. [ 1913 Webster ] |
| pachyderm | n. [ Cf. F. pachyderme. ] (Zool.) Any of various nonruminant hoofed mammals having very thick skin, including the |
| pachyderma | n. (Med.) An abnormal thickening of the skin (usually unilateral on an extremity) caused by congenital enlargement of lymph vessel and lymph vessel obstruction. |
| pachydermal | a. (Zool.) Of or relating to the pachyderms; |
| Pachydermata | ‖n. pl. [ NL., fr. Gr. |
| pachydermatosis | n. (Med.) Same as pachyderma. |