ratite /ratˈīt/ (ornithology)

1. Having a keel-less breastbone
2. Of the Ratitae /rä-tīˈtē/, flightless birds, such as the ostrich, rhea, emu, kiwi, etc

• perishers
• perishes
• perishing
• perishingly
• perisperm
• perispermal
• perispermic
• perisperms
• perispomenon
• perispomenons
• perissodactyl
• Perissodactyla
• perissodactylate
• perissodactylic
• perissodactylous
• perissodactyls
• perissologies
• perissology
• perissosyllabic
• peristalith
• peristaliths
• peristalses
• peristalsis
• peristaltic
• peristaltically