What does dehisce mean?
To dehisce is to split or burst open along a natural line of weakness. The word belongs primarily to scientific vocabulary. In botany and mycology, fruits, seed pods, and anthers are said to dehisce when they open in a characteristic way — along a seam, pore, or lid — to release their seeds or spores, making dehiscence an essential mechanism of reproduction and dispersal. In medicine, the verb describes a wound or surgical incision that reopens or gapes, a serious complication of healing. Derived from the Latin dehiscere, meaning 'to gape open', the term entered English in the seventeenth century and shares a distant origin with 'hiatus', literally a gaping gap. Because it names such a specific kind of opening, dehisce has no comfortable everyday substitute: 'split' or 'burst' lose the sense of a deliberate, built-in seam. It remains a precise, useful word for anyone writing about plants, fungi, or surgical recovery.
verbTo split open or gape along a natural line, as a seed pod, anther, or fruit does when it releases its contents; also used of a wound that gapes open.
- (of a fruit, seed pod, or anther) to split or burst open along a definite line to release contents
- (of a wound or surgical incision) to gape or split open
"The ripe capsules dehisce in late summer, scattering seeds across the forest floor."
"When the anthers dehisce, pollen is released onto visiting insects."
"The surgeon warned that the incision might dehisce if the patient strained too soon after surgery."
Botany has its own word for a seed pod popping open at exactly the right moment — dehisce — borrowed from Latin for 'to gape'.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of dehisce
The word comes from the Latin dehiscere, meaning 'to gape or split open', formed from the prefix de- ('away') and hiare ('to gape'), the same root that gives English 'hiatus'. It was adopted into English in the early seventeenth century as a learned, scientific borrowing. Its derivatives include 'dehiscence' (the noun naming the process) and 'dehiscent' (the adjective describing structures prone to opening this way).
Related word forms
How dehisce is actually used
"Dehisce" is a technical term used chiefly in botany, mycology, and medicine; it rarely appears in everyday conversation. In botany, it carries a neutral, even positive connotation — dehiscence is how plants disperse seeds and pollen — whereas in medicine it describes an undesirable complication of wound healing.
Easily confused with dehisce
"Decree" means an official order, while "dehisce" means to split or burst open along natural lines.