# abscissin

CEFR C2 · Noun

Source: https://englishreference.com/word/abscissin
Updated: 2026-05-18

## Definition

a chemical substance that helps plants grow and change shape. It is used to help fruits ripen or to make leaves fall off a tree.

For teachers: a plant hormone that promotes the shedding of leaves and the ripening of fruits. Often used in agricultural contexts to control the timing of harvests.

## Examples

- The farmer used abscissin to help the apples fall from the tree.
- By applying abscissin to the citrus groves, the growers ensured that the fruit would be ready for market at the same time.
- The natural production of abscissin in the plant is triggered by changes in light and temperature, signaling the end of the growing season and the beginning of dormancy.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.