Heuristic - Hircus

heuristic

(hū-rĭs′tĭk) [Gr. heuriskein, to find out, discover] A rule or model used to simplify problem solving or the interpretation of complex sets of data.

hevein

(hē′vē-ĭn) A protein allergen found in natural rubber latex that stimulates neutrophils to release oxygen radicals. Hevein is a lectin responsible for the IgE-mediated hypersensitivity response to latex products.

HEW

Department of Health, Education, and Welfare. SEE: Department of Health and Human Services.

hex-, hexa-

[Gr. hex, six] Prefixes meaning six.

hexacanth

(hek′să-kanth″) [hex- + acantha] The embryonic stage in the life cycle of the tapeworm that has six hooklets to penetrate the intestinal mucosa. SYN: oncosphere.

hexachlorophene

(hĕks″ă-klō′rō-fēn) An antibacterial compound typically used in soaps and scrubs and experimentally used as a cholinesterase inhibitor.

hexad

(hĕk′săd) 1. Six similar things. 2. An element with a valence of six.

hexadecimal

(hĕks″ă-dĕs′ĭ-mŭl) [″ + L. decimus, tenth] In computers, a number system using base 16 rather than base 2 (binary) or 10 (decimal).

hexaploidy

(hĕk′să-ploy″dē) [″ + ploos, fold] A condition of having six sets of chromosomes.

Hexapoda

(hek-sap′ŏ-dă) [Gr. hexapous, stem hexapod-, having six feet, six-footed] A subphylum making up the largest number of species of arthropods, including the Insecta and three very small groups of wingless arthropods, Collembola (springtails), Protura, and Diplura, formerly classified as insects. Hexapods are named for their most distinctive feature, a thorax with three pairs of legs. Most other arthropods have more than three pairs of legs. SEE: Collembola; Insecta.

hexavalent

(hĕks″ă-vā′lĕnt) [″ + L. valere, to have power] Having a chemical valence of six.

hexokinase

(hĕks″ō-kī′nās) [″ + kinein, to move, + -ase, enzyme] A cellular enzyme in cells that in the presence of ATP catalyzes the conversion of glucose to glucose-6-phosphate, the first step in glycolysis.

hexosamine

(hĕk′sŏs′ă-mēn″) A sugar containing an amino group in place of a hydroxyl group, e.g., glucosamine.

hexose

(heik′sois) Any monosaccharide of the general formula C₆H₁₂O₆; the group includes glucose, fructose, and galactose.

hexosephosphate

(hĕks″ōs-fŏs′fāt) [Gr. hex, six, + phosphoros, phosphorus] A phosphoric acid ester of glucose; one of several esters formed in the muscles and other tissues in the metabolism of carbohydrates.

HF

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