patagium

American  

[puh-tey-jee-uhm] / pəˈteɪ dʒi əm /

noun

plural

patagia

1. a wing membrane, as of a bat.

2. the extensible fold of skin of certain insects or of a gliding mammal or reptile, as a flying squirrel.

3. either of two small processes on the anterior thorax, found especially among butterflies and moths.

---

patagium British  

/ pəˈteɪdʒɪəm /

noun

1. a web of skin between the neck, limbs, and tail in bats and gliding mammals that functions as a wing

2. a membranous fold of skin connecting margins of a bird's wing to the shoulder

---

Etymology

Origin of patagium

1820–30; < New Latin, special use of Latin patagium tunic border