Chiroptera

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Chi·rop·te·ra

(kī-rop'ter-ă),
The bats, an order of placental mammals of worldwide distribution, characterized by a modification of the forelimbs that enables them to fly. They are capable of emitting ultrasonic sounds that enable them to echolocate, find flying insect prey, and avoid objects in the dark. Though mostly insectivorous, some species feed on nectar, fruit, fish, and blood; the blood-feeding and insectivorous species are important reservoir hosts of rabies.
[chiro- + G. pteron, wing]

Chiroptera

or

Cheiroptera

the order of mammals that comprises the bats, the wings of which are formed from a membrane of skin, the patagium, stretched from the front to hind limbs and over the fingers (but not the thumb) of the forewing.