alula

noun

al·u·la ˈal-yə-lə How to pronounce alula (audio)

plural alulae ˈal-yə-ˌlē How to pronounce alula (audio)

-ˌlī

: a specialized structure of the upper leading edge of a bird's wing that consists of a tuft of short, stiff flight feathers attached to the movable first wing digit corresponding to the thumb and that facilitates flight, landing, and maneuverability at slow speeds : bastard wing

While easy to overlook, the alula is essential to a modern bird's aerodynamics.

Tom Waters

By altering airflow, the alula permits good maneuverability and control at low flying speeds, crucial for takeoffs and landings.

National Geographic

Word History

Etymology

borrowed from New Latin, from Latin āla "wing" + -ula, diminutive suffix — more at ala

First Known Use

1772, in the meaning defined above

单词	alula
释义	alula noun al·u·la ˈal-yə-lə plural alulae ˈal-yə-ˌlē -ˌlī : a specialized structure of the upper leading edge of a bird's wing that consists of a tuft of short, stiff flight feathers attached to the movable first wing digit corresponding to the thumb and that facilitates flight, landing, and maneuverability at slow speeds : bastard wing While easy to overlook, the alula is essential to a modern bird's aerodynamics. Tom Waters By altering airflow, the alula permits good maneuverability and control at low flying speeds, crucial for takeoffs and landings. National Geographic Word History Etymology borrowed from New Latin, from Latin āla "wing" + -ula, diminutive suffix — more at ala First Known Use 1772, in the meaning defined above
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