| 释义 |
laxative
lax·a·tive L0077300 (lăk′sə-tĭv)n. A food or drug that stimulates evacuation of the bowels.adj.1. Stimulating evacuation of the bowels.2. Causing looseness or relaxation, especially of the bowels.
[Middle English, from Old French laxatif, from Medieval Latin laxātīvus, preventing constipation, from Late Latin, assuaging, from Latin laxātus, past participle of laxāre, to relax, from laxus, loose; see lax.]laxative (ˈlæksətɪv) n (Medicine) an agent stimulating evacuation of faecesadj (Medicine) stimulating evacuation of faeces[C14 (originally: relaxing): from Medieval Latin laxātīvus, from Latin laxāre to loosen]lax•a•tive (ˈlæk sə tɪv)
n. 1. a medicine or agent for relieving constipation. adj. 2. of, pertaining to, or constituting a laxative; purgative. [1350–1400; Middle English (< Middle French) < Medieval Latin] laxative - Can mean "having the power of relaxing" (from Latin laxare, "loosen").See also related terms for loosen.Thesaurus| Noun | 1. |  laxative - a mild cathartic phenolphthalein - a laxative used in many preparations under various trade names; also used as an acid-base indicator in titrations involving weak acids and strong bases because it is brilliant red at high alkalinity and colorless below pH 8aperient, cathartic, physic, purgative - a purging medicine; stimulates evacuation of the bowels | | Adj. | 1. | laxative - stimulating evacuation of fecescostive - retarding evacuation of feces; binding; constipating |
laxativenoun purgative, salts, purge, cathartic, physic (rare), aperient Foods that ferment quickly in the stomach are excellent natural laxatives.Translationslaxative (ˈlӕksətiv) noun, adjective (a medicine) which makes it easier to pass waste matter from the bowels. 瀉藥，通便的 轻泻剂，轻泻的，通便剂 See laxative
laxative
laxative, drug or other substance used to stimulate the action of the intestines in eliminating waste from the body. The term laxative usually refers to a mild-acting substance; substances of increasingly drastic action are known as cathartics, purgatives, hydrogogues, and drastics, respectively. Laxatives or cathartics fall into three general categories: irritants that stimulate the muscular action of the intestines (cascara, phenolphthalein, senna); compounds that increase the amount of bulk in the intestines either by withdrawing water from the body (salines such as Epsom salts, citrate of magnesia) or by increasing the bulk when combined with fluids (agar-agar, bran, the various cellulose substances); and lubricants such as mineral oil, which ease the passage of waste and counteract excessive drying of the intestinal contents. Frequent or regular use of cathartics may seriously disrupt the natural digestive processes. When food and even waste products are forced out of the intestinal tract too rapidly, the body is deprived of vital substances, including the nutrients absorbed in the small intestine and the water, vitamins, and minerals extracted from the waste matter in the large intestine. Vitamins A and D, which are soluble in oil, are removed from the body even when the least irritating laxative, mineral oil, is taken. In addition to disrupting digestive and nutritional processes, laxatives reinforce the condition they are intended to overcome. When the intestines are purged, it may be several days before they can fill again with sufficient waste to induce natural elimination. The harm can be perpetuated by frequent use aimed at forcing daily elimination. The response to laxatives is soon lessened, so that larger and more frequent doses may become necessary. Laxatives should be avoided especially when there is abdominal pain. An inflamed appendix may rupture after the use of a laxative. See constipationconstipation,
infrequent or difficult passage of feces. Constipation may be caused by the lack of adequate roughage or fluid in the diet, prolonged physical inactivity, certain drugs, or emotional disturbance.
..... Click the link for more information. .laxative[′lak·səd·iv] (pharmacology) An agent that stimulates bowel movement and relieves constipation. laxative an agent stimulating evacuation of faeces laxative
laxative [lak´sah-tiv] a medicine that loosens the bowel contents and encourages evacuation. One with a mild or gentle effect is also known as an aperient; one with a strong effect is referred to as a cathartic or purgative. Bland laxatives may be used temporarily in treatment of constipation along with other measures. mineral oil and olive oil act as lubricants; sometimes mineral oil is used in combination with agar, which is bulk-producing. cascara sagrada aromatic fluid extract and milk of magnesia are two other mild laxatives. mucilloid" >Psyllium hydrophilic mucilloid, a preparation from a plant seed, helps elimination by encouraging peristaltic movements. Saline purges, such as sodium phosphate and magnesium sulfate (Epsom salt), flush the intestinal tract by preventing the intestines from absorbing water; evacuation takes place as soon as water accumulates. castor oil is a strong cathartic that causes complete evacuation of the bowels. Its administration is followed by temporary constipation.Dangers of Laxatives. Laxatives should be used only with the advice of a health care provider. Constipation may be a symptom of serious organic illness as well as the result of improper diet and habits. Also, laxatives taken regularly tend to deprive the colon of its natural muscle tone and thus can be the cause of chronic constipation rather than its cure. Mineral oil taken regularly interferes with the absorption of certain vitamins, especially those that are fat soluble. It can also seep into the lungs, causing a reaction resembling pneumonia, especially in older people. Purgative salts can produce dehydration. Laxatives that produce bulk may cause stonelike balls (bezoars) to develop. A strong cathartic such as castor oil can have fatal results if used when there is nausea, vomiting, abdominal pain, or other symptoms of appendicitis. It is also dangerous to use during pregnancy. Children cannot use as large dosages or as strong laxatives as adults.lax·a·tive (lak'să-tiv), 1. Mildly cathartic; having the action of loosening the bowels. 2. A mild cathartic; a remedy that moves the bowels slightly without pain or violent action. [L. laxativus, fr. laxo, pp. -atus, to slacken, relax] laxative (lăk′sə-tĭv)n. A food or drug that stimulates evacuation of the bowels.adj.1. Stimulating evacuation of the bowels.2. Causing looseness or relaxation, especially of the bowels.laxative Herbal medicine
A herb used to purge the bowels.
Examples
Cascara (Cascara sagrada), castor oil plant (Ricinus communis), flax seed (Linum usitatissimum), liquorice root (Glycyrrhiza glabra), olive oil (Olea europaea), psyllium (Plantago psyllium), rhubarb (Rheum palmatum) and senna (Cassia acutifolia).laxative Purgative Pharmacology Any agent used to encourage the onward march of the waste stream. See Bulk-forming laxative, Stimulant laxative. lax·a·tive (lak'să-tiv) Any oral agent that promotes the expulsion of feces, including harsh stimulant laxatives (e.g., senna, bisacodyl), saline laxatives (e.g., magnesium citrate), stool softeners (e.g., docusate sodium), bulking laxatives (e.g., psyllium, methylcellulose), and lubricants (e.g., mineral oil).
Synonym(s): aperient. [L. laxativus, fr. laxo, pp. -atus, to slacken, relax]LaxativeMaterial that encourages a bowel movement.Mentioned in: Encopresislax·a·tive (lak'să-tiv) Mild cathartic; remedy that moves bowels gently. [L. laxativus, fr. laxo, pp. -atus, to slacken, relax]LegalSeePurgationlaxative
Related to laxative: laxative drugsSynonyms for laxativenoun purgativeSynonyms- purgative
- salts
- purge
- cathartic
- physic
- aperient
Antonyms for laxativenoun a mild catharticRelated Words- phenolphthalein
- aperient
- cathartic
- physic
- purgative
adj stimulating evacuation of fecesAntonyms |