pinna /pinˈə/ (biology)

1. A leaflet of a pinnate leaf, or any similar expansion
2. A wing, fin, feather, or similar expansion
3. The outer ear, esp the upper part

pinnˈate or pinnˈated adjective

1. Shaped like a feather
2. Having a row of leaflets on each side of the rachis, or other expansions arranged in similar manner
3. (usu pennate) having wings, fins, or winglike tufts

pinnˈately adverb

pinnatifid /pin-atˈi-fid/ adjective

(of leaves) pinnately cut roughly halfway down

pinnatipartˈite adjective

(of leaves) pinnately cut rather more than halfway

pinnatˈiped adjective

(of birds) with lobate feet

pinnatˈisect adjective

(of leaves) pinnately cut nearly to the midrib

pinnˈiped /-i-ped/ or pinnˈipede /-pēd/ noun

(see -ped) a member of the Pinnipēˈdia, or paddle-footed Carnivora, ie seals, sea lions, and walruses

pinnˈūlate or pinnˈulated adjective

• irrespirable
• irresponsibility
• irresponsible
• irresponsibleness
• irresponsibly
• irresponsive
• irresponsively
• irresponsiveness
• irrestrainable
• irresuscitable
• irresuscitably
• irretention
• irretentions
• irretentive
• irretentiveness
• irretentivenesses
• irretrievability
• irretrievable
• irretrievableness
• irretrievably
• irreverence
• irreverences
• irreverent
• irreverential
• irreverently