IPA: /ˈkjuːp.jʊ.lə/
KK: /kjuːˈpjuːlə/
A small cup-like structure or cavity, often found in plants or fungi.
The cupula of the plant held water after the rain.
Cupula is derived from the Latin word "cupula" (meaning small cup or dome), which is a diminutive form of "cupa" (meaning tub or container). The word refers to a small dome-like structure or a cup-shaped object.
Think of a small 'cup' ('cupula') that resembles a dome — this helps you remember that 'cupula' refers to a small dome or cup-shaped structure.