One of the mysteries of the English language finally explained.
1The cassia tree.
- ‘Senna grows in most tropical regions of the world.’
- ‘Even we do not use irrigation and fumigation to our field used for growing senna.’
- 1.1mass noun A laxative prepared from the dried pods of the cassia tree.
- ‘Do not use strong laxatives, such as the stimulant laxative senna, on a routine basis unless on the advice of doctor, because long term use of such laxatives can be harmful.’
- ‘A 40-year-old woman with Rett syndrome presented to her general practitioner with a long-standing history of abdominal pain, loss of appetite, and constipation requiring laxatives including senna.’
- ‘The non-osmotic laxatives, phenolphthalein and senna, partly act by stimulating secretory mechanisms in the intestine.’
- ‘Not only does she use an enema a couple of times a week, but she also drinks laxative tea containing senna all the time.’
- ‘Magnesium hydroxide is less likely to irritate the digestive tract than a stimulant laxative such as senna.’
- 1.2 Used in names of plants of the pea family that are similar to senna, e.g. bladder senna.
- ‘The Department of Environment and Conservation has identified 7 priority actions to help recover the Bladder Senna in New South Wales.’
- ‘Originally, Alexandrian senna was obtained principally from Sudan, but it is now cultivated in both Egypt and Sudan.’
Mid 16th century: from medieval Latin sena, from Arabic sanā.
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