abscission
abscission — 名詞
1. The natural process in which a plant deliberately drops a part of itself — such
脫落
植物器官自然脫離的過程
The natural process in which a plant deliberately drops a part of itself — such as a leaf, flower, or piece of fruit — by forming a special layer of cells that slowly cuts the part off from the rest of the plant.
Natural abscission caused the maple leaves to fall onto the garden path.
自然脫落讓楓葉落到了花園小徑上。
collocation: natural abscission
After the fruit ripened, abscission made the apple drop from the branch.
果實成熟後，脫落作用使蘋果從樹枝上掉下來。
In biology class, abscission was described as a process that protects trees through winter.
在生物課上，脫落被描述為一種保護樹木過冬的過程。
The gardener found the abscission layer where the flower had separated from the stem.
園丁在花朵從莖上分離的地方找到了離層。
During autumn, abscission allows old leaves to fall before new buds open.
秋天時，脫落作用讓老葉掉落，以便新芽在春天綻放。
- shedding
Broader term — can apply to animals losing fur, feathers, or skin, not just plants
- dropping
Everyday word for a part falling off; less precise and not limited to plants
- defoliation
Specifically the loss of leaves, often through damage or chemicals rather than a natural process
- attachment
The state of being fastened or connected, opposite of separation
用法筆記
Primarily used in botany and plant science. In everyday conversation, speakers more commonly use verbs like fall off or drop rather than the noun abscission.