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Related to abscission: abscission layer, abscission zone


1. The act of cutting off.
2. Botany The shedding of leaves, flowers, or fruits following the formation of the abscission zone.

[Latin abscissiō, abscissiōn-, from abscissus, past participle of abscindere, to cut off : ab-, ab- + scindere, to cut; see skei- in Indo-European roots.]


(æbˈsɪʒən; -ˈsɪʃ-)
1. (Botany) the separation of leaves, branches, flowers, and bark from plants by the formation of an abscission layer
2. the act of cutting off
[C17: from Latin abscissiōn-, from ab-1 + scissiō a cleaving]


(æbˈsɪʒ ən, -ˈsɪʃ-)

1. the act of cutting off; sudden termination.
2. the normal separation of flowers, fruit, and leaves from plants.
[1605–15; < Latin abscissiō. See abscissa, -tion]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.abscission - shedding of flowers and leaves and fruit following formation of scar tissue in a plantabscission - shedding of flowers and leaves and fruit following formation of scar tissue in a plant
shedding, sloughing - the process whereby something is shed
2.abscission - the act of cutting something offabscission - the act of cutting something off  
remotion, removal - the act of removing; "he had surgery for the removal of a malignancy"
circumcision - the act of circumcising; surgical removal of the foreskin of males
References in periodicals archive ?
That difference is explained, likely, due to the high temperatures added to the flooding faced by the plants in the period of the present experiment, which provided an abrupt fall in three out of the four gas exchange parameters evaluated by the fourth day, where the plants underwent serious leaf abscission, preventing the experiment continuity.
The reduction in the number of living leaves was due to the occurrence of larger leaf abscission (Figure 2C) in the plants grown under the highest salinity concentrations evaluated (40 and 60 mM NaCl).
Harvest started 93 days after sowing, and lasted for 17 days, taking the appearance of abscission zone in the fruit peduncle as a point of harvest.
It is interesting to highlight that, in the cultivation of 'pitombeira' seedlings, there was expressive leaf abscission in the lower branches.
Critique: Original, imaginative, engaging, entertaining, "The Abscission Zone" by Samuel Muggington is a compelling science fiction novel that reveals the fragility and savagery of the natural world, along with mankind's profound impact on the Earth's biodiversity and ecosystems.
Most of the postharvest losses on table grapes are related to the berry abscission and stem browning that affect the product appearance, reducing its commercial value and becoming a problem to table grapes production chain worldwide.
Nevertheless, the biophysical process is always the same: the cell membrane deforms and reshapes to wrap around the particle, and upon closure and abscission of the resultant cup, the particle is internalised.
It is also suggested that abscission may cause retardation in seed yield.
It is a high yield plant with a complete abscission layer originating from Oryza sativa L.
1997), increase the content of inhibitors like abscisic acid in the leaves and decreased the auxins content (Anisimov and Bulatova, 1982) leading to fruit abscission at the reproductive stage (Zhao and Oosterhuis, 2000) so that senescence started at early growth stages.
This central spindle signal model is based on the activity of two key regulatory complexes required for central spindle assembly, Rho regulation, abscission, and, ultimately, successful cytokinesis.