Definitions

1. verb

to have or be provided with a prolongation or a prolongated part, such as an antennal flagellum, a caudal appendage, or a prolongated part of the body.

“The scientist observed the insect’s behaviour, noting how it ampulated its antennae to sense the environment.”

2. noun

a prolongated part of an animal’s body, especially an antennal flagellum or a caudal appendage.

“The ampulate appendage of the spider helped it balance while navigating through the dense foliage.”