AskDefine | Define rheum

Dictionary Definition



1 a watery discharge from the mucous membranes (especially from the eyes or nose)
2 rhubarb [syn: genus Rheum]

User Contributed Dictionary

see Rheum



  • /ˀɹuːm/


  1. A watery or thin discharge, of serum or mucus, especially from the eyes or nose.


Derived terms

Extensive Definition

Rheum is a medical term for the natural watery discharge from the eyes, commonly known as "sleep", "eye cheese" or "eye boogers"(or some derivative thereof), which forms a crust on the eyelids during sleep (contrast to Mucopurulent discharge). It is formed by a combination of mucus (consisting of mucin discharged from the cornea or conjunctiva), tears, leaked blood cells, dead skin cells from the eyelids, and dust.
Normally, blinking causes this substance to be washed away with tears. The absence of this function during sleep, however, results in a small amount of dry rheum forming in the corners of the eyes even among healthy individuals, especially children. Still, the formation of a large amount of crust or the presence of pus within it may indicate dry eye or other more serious eye infections including conjunctivitis and corneitis.
Adults and older children can easily remove the crust by washing the eye with water or simply brushing them away with clean fingers. In young children, however, the buildup of rheum can be so severe, that opening one's eye upon awakening can be difficult or impossible without washing the eye. Very young children or people under care may need to have this done by another individual.
rheum in Japanese: 目やに
rheum in Tamil: பூளை
rheum in Chinese: 眵

Synonyms, Antonyms and Related Words

Asiatic flu, Hong Kong flu, abscess, acute bronchitis, adenoiditis, ague, aluminosis, amygdalitis, anemia, ankylosis, anoxia, anthracosilicosis, anthracosis, apnea, asbestosis, asphyxiation, asthma, ataxia, atrophy, atypical pneumonia, autacoid, backache, bile, bituminosis, black lung, bleeding, blennorhea, bronchial pneumonia, bronchiectasis, bronchiolitis, bronchitis, bronchopneumonia, cachexia, cachexy, catarrh, chalicosis, chalone, chill, chills, chronic bronchitis, chyle, cold, colic, collapsed lung, colostrum, common cold, coniosis, constipation, convulsion, coryza, coughing, croup, croupous pneumonia, cyanosis, diarrhea, digestive secretion, discharge, dizziness, double pneumonia, dropsy, dry pleurisy, dysentery, dyspepsia, dyspnea, edema, emaciation, emphysema, empyema, endocrine, epidemic pleurodynia, fainting, fatigue, fever, fibrillation, fibrinous pneumonia, flu, flux, gall, gastric juice, gleet, grippe, growth, hay fever, hemorrhage, high blood pressure, hormone, humor, hydrops, hypertension, hypotension, ichor, icterus, indigestion, inflammation, influenza, insomnia, intestinal juice, itching, jaundice, la grippe, labored breathing, lachryma, lactation, laryngitis, leukorrhea, lipoid pneumonia, lobar pneumonia, low blood pressure, lumbago, lung cancer, lung fever, lymph, marasmus, matter, milk, mucor, mucus, nasal discharge, nausea, necrosis, pain, pancreatic juice, paralysis, peccant humor, pharyngitis, phlegm, pleurisy, pleuritis, pneumococcal pneumonia, pneumoconiosis, pneumonia, pneumonic fever, pneumothorax, prostatic fluid, pruritus, purulence, pus, quinsy, rash, saliva, salivary secretion, sanies, sclerosis, seizure, semen, serous fluid, serum, shock, siderosis, silicosis, skin eruption, sneezing, snot, sore, sore throat, spasm, sperm, suppuration, sweat, swine flu, tabes, tachycardia, tear, teardrop, tears, the sniffles, the snuffles, the whites, thyroxin, tonsilitis, tumor, upset stomach, urine, vertigo, virus pneumonia, vomiting, wasting, wet pleurisy, whooping cough
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