| hard soap | A soap made with olive oil, or some other suitable oil or fat, and sodium hydroxide; used as a detergent, and in the form of a suppository or soapsuds enema for constipation; used also as an excipient in pills. Synonym: Castile soap. (05 Mar 2000) |
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| hard sore | The primary skin lesion of syphilis which begins at the site of infection after an interval of 10-30 days as a papule or red ulcerated skin lesion. (27 Sep 1997) |
| hard tarter | <dentistry> A calcium salt concretion which forms on your teeth. Calculus deposits form on the teeth in areas which you do not floss or brush. If these concretions are left to build up on the tooth enamel, they will irritate the gum tissue, push it away from the tooth and promote progressive bone loss. Eventually the teeth can loosen and fall out. These deposits can be removed by a dentist or a dental hygienist on an annual to biannual basis. (27 Sep 1997) |
| hard tissue | Tissue that has become mineralised, tissue having a firm intercellular substance, e.g., cartilage and bone. (05 Mar 2000) |
| hard tubercle | A tubercle lacking necrosis. (05 Mar 2000) |
| hard water | <chemistry> Hard water is water which contains minerals like calcium carbonate, magnesium carbonate, bicarbonates, sulphates, or chlorides, because it has been exposed to rocks or rocky soils. Hard water can corrode, discolour, or deposit its minerals, in and around materials such as water pipes. (09 Oct 1997) |
| acute decubitus ulcer | A severe form of bedsore, of neutrophic origin, occurring in hemiplegia or paraplegia. (05 Mar 2000) |
| Aden ulcer | The lesion occurring in cutaneous leishmaniasis. (05 Mar 2000) |
| amputating ulcer | An ulcer encircling a limb. (05 Mar 2000) |
| anastomotic ulcer | An ulcer of jejunum, after gastroenterostomy. (05 Mar 2000) |
| anti-ulcer agents | Various agents with different action mechanisms used to treat or ameliorate ulcers or irritation of the gastrointestinal tract. (12 Dec 1998) |
| aphthous ulcer | <gastroenterology> A type of benign mouth ulcer often caused by injury to the mucosal lining of the oral cavity, viral infection or vitamin deficiency. (27 Sep 1997) |
| atonic ulcer | An ulcer that shows little or no tendency to heal. (05 Mar 2000) |
| Buruli ulcer | An ulcer of the skin, with widespread necrosis of subcutaneous fat, due to infection with Mycobacterium ulcerans; occurs in Uganda in persons living on the Nile river banks. Origin: Buruli, district in Uganda (05 Mar 2000) |
| Gaboon ulcer | A form of tropical ulcer affecting the residents of this region; it resembles a syphilitic ulcer, especially in the appearance of its scar. Origin: Gaboon, a region in Africa (05 Mar 2000) |