Definitions

1. adjective

relating to or resembling a bulb, especially a bulb of a nerve or a bulbous structure

“The nonbulbar root of the plant required special care.”

2. adjective

not forming a bulb, especially a nerve bulb

“The nonbulbar nerve fibers were under intense study.”

3. adjective

not having a bulbous shape

“The nonbulbar leaves were a unique feature of the plant species.”