Where does “flashbulb” come from?

flashbulb (English) comes from English bulb, from Latin bulbus, from Ancient Greek βολβός — bulb of various plants, especially onion; tassel...

flashbulb (English): A glass bulb that made a single bright flash for...

Definitions

flashbulb traces back through two separate lines of ancestry.

Step	Language	Word	Meaning
1	English	bulb	Any solid object rounded at one end and tapering...
2	Latin	bulbus	bulb
3	Ancient Greek	βολβός	bulb of various plants, especially onion; tassel...

Step	Language	Word	Meaning
1	English	Flash	A multimedia platform, most often used for adding animation and interactivity to webpages
2	Middle English	flasshen	—