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(Botany) the separation and release of a mature spore from a sporophore by the formation of a septum. This process occurs in some fungi
[C17: from Latin ab-1 + strictio a binding, from stringere to bind]
a method of spore formation in fungi in which successive portions of the sporophore are cut off through the growth of septa; abjunction.
ab•strict (æbˈstrɪkt) v.i.