Definitions

1. verb

to form or shape something into a rostrum or beak-like projection, especially on a leaf or a petal

“The botanist observed that the rare plant’s leaves rostrulate in a unique pattern.”

2. verb (archaic)

to adorn or equip with a rostrum

“In ancient times, the king’s throne rostrulated with intricate carvings.”

3. noun

the state or process of rostrulation

“The scientist studied the phenomenon of rostrulation in various plant species.”