| habromania | <psychiatry> Rarely used term for a morbid impulse toward gaiety. Origin: G. Habros, graceful, + mania, insanity (05 Mar 2000) |
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| habronaemiasis | Infection of horses with any nematodes of the genus Habronema; commonly denotes wound infections that contain the larvae of this worm. (05 Mar 2000) |
| Habronema | A genus of spiruroid nematodes inhabiting the stomach of horses. The larvae develop in housefly and stable fly maggots living in manure, become infective when the fly larvae pupate, and are carried by adult flies to open wounds on horses, where they are left and cause cutaneous habronaemiasis; reinfection of the horse's stomach by Habronema occurs by accidental ingestion of infected flies or from licking wounds in which infective larvae are found. Origin: G. Habros, graceful, delicate, + nema, a thread (05 Mar 2000) |
| Habronema majus | One of two species (the other being Habronema microstoma) similar in appearance, hosts, distribution, and life cycle to Habronema muscae; the intermediate host is the stable fly, Stomoxys calcitrans. (05 Mar 2000) |
| Habronema megastoma | A species that causes tumours in gastric mucosa containing large numbers of the small nematodes; the larvae cause cutaneous habronaemiasis; the intermediate host is the common housefly, Musca domestica. (05 Mar 2000) |
| Habronema microstoma | One of two species (the other being Habronema microstoma) similar in appearance, hosts, distribution, and life cycle to Habronema muscae; the intermediate host is the stable fly, Stomoxys calcitrans. (05 Mar 2000) |
| Habronema muscae | A species that occurs in the stomach of the horse, mule, ass, or zebra; the intermediate host is the common housefly, Musca domestica, or related flies. (05 Mar 2000) |
| HACEK group | A group of Gram-negative bacteria that includes Haemophilus spp., Actinobacillus actinomycetemcomitans, Cardiobacterium hominis, Eikenella corrodens, and Kingella kingae. Bacteria in this group have in common a culture requirement of an enhanced carbon dioxide atmosphere and ability to infect human heart valves. (05 Mar 2000) |
| hacienda | A large estate where work of any kind is done, as agriculture, manufacturing, mining, or raising of animals; a cultivated farm, with a good house, in distinction from a farming establishment with rude huts for herdsmen, etc.; a word used in Spanish-American regions. Origin: Sp, fr. OSp. Facienda employment, estate, fr. L. Facienda, pl. Of faciendum what is to be done, fr. Facere to do. See Fact. Source: Websters Dictionary (01 Mar 1998) |
| hack | 1. A frame or grating of various kinds; as, a frame for drying bricks, fish, or cheese; a rack for feeding cattle; a grating in a mill race, etc. 2. Unburned brick or tile, stacked up for drying. See: Hatch a half door. Source: Websters Dictionary (01 Mar 1998) |
| hackberry | <botany> A genus of trees (Celtis) related to the elm, but bearing drupes with scanty, but often edible, pulp. C. Occidentalis is common in the Eastern United States. Source: Websters Dictionary (01 Mar 1998) |
| hackbolt | <zoology> The greater shearwater or hagdon. See Hagdon. (01 Mar 1998) |
| hackee | <zoology> The chipmunk; also, the chickaree or red squirrel. Source: Websters Dictionary (01 Mar 1998) |
| hacker | One who, or that which, hacks. Specifically: A cutting instrument for making notches; especially, one used for notching pine trees in collecting turpentine; a hack. Source: Websters Dictionary (01 Mar 1998) |
| hackery | A cart with wooden wheels, drawn by bullocks. Origin: Hind. Chakra. Source: Websters Dictionary (01 Mar 1998) |