Definitions

1. adjective

relating to or produced by the bulb, especially of a bulbous plant or a bulbous part of an organ or structure, and also relating to or produced by a nuclear explosion

“The bulbonuclear effects from the explosion were devastating to the entire city.”

2. noun

a nuclear explosion that resembles a bulb in appearance or effect

“The scientists observed a bulbonuclear phenomenon during the nuclear experiment.”