| highest turbinated bone | A small concha frequently present on the posterosuperior part of the lateral nasal wall; it overlies the supreme nasal meatus. Synonym: concha nasalis suprema, fourth turbinated bone, highest concha, highest turbinated bone, Santorini's concha, concha santorini, supraturbinal, supreme concha, supreme turbinated bone, turbinated body. (05 Mar 2000) |
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| highly repetitive DNA | <molecular biology> The fraction of the eukaryotic genome which consists of a short sequence of nucleotides that is repeated thousands of times all over the genome. Highly repetitive DNA is very similar to satellite DNA. (09 Oct 1997) |
| Highmore's body | A mass of fibrous tissue continuous with the tunica albuginea, projecting into the testis from its posterior border. Synonym: corpus highmori, corpus highmorianum, Highmore's body, septum of testis. (05 Mar 2000) |
| Highmore, Nathaniel | <person> British anatomist, 1613-1685. See: antrum of Highmore, Highmore's body. (05 Mar 2000) |
| Higoumenakia sign | <clinical sign> Sternoclavicular swelling in late congenital syphilis. (05 Mar 2000) |
| hila | The pleural of hilum. (05 Mar 2000) |
| hilar | <botany> Belonging to the hilum. Source: Websters Dictionary (01 Mar 1998) |
| hilar cell tumour of ovary | A small benign masculinizing ovarian tumour derived from hilar cells, which resemble Leydig cells of the testis. (05 Mar 2000) |
| hilar dance | Vigorous pulmonary arterial pulsations due to increased blood flow, often seen fluoroscopically in patients with congenital left-to-right shunts, especially atrial septal defects. (05 Mar 2000) |
| hilar lymph nodes | Lymph nodes in the hilum of the lung that receive lymph from the pulmonary node's, and drain to the tracheobronchial nodes. Synonym: glandulae bronchiales, bronchial glands, hilar lymph nodes, nodi lymphatici bronchopulmonales. (05 Mar 2000) |
| hilar shadow | Radiographic hilum of the lung; a composite radiographic shadow of the central pulmonary arteries and veins, with associated bronchial walls and lymph nodes, within the right or left lung. (05 Mar 2000) |
| hile | <botany> Same as Hilum. Source: Websters Dictionary (01 Mar 1998) |
| hilitis | Inflammation of the lining membrane of any hilus. (05 Mar 2000) |
| hill | 1. A natural elevation of land, or a mass of earth rising above the common level of the surrounding land; an eminence less than a mountain. "Every mountain and hill shall be made low." (Is. Xl. 4) 2. The earth raised about the roots of a plant or cluster of plants. See Hill. 3. A single cluster or group of plants growing close together, and having the earth heaped up about them; as, a hill of corn or potatoes. Hill ant, one of numerous species of small Asiatic singing birds of the family Leiotrichidae. Many are beautifully coloured. Origin: OE. Hil, hul, AS. Hyll; akin to OD. Hille, hil, L. Collis, and prob. To E. Haulm, holm, and column. Cf. 2d Holm. To surround with earth; to heap or draw earth around or upon; as, to hill corn. "Showing them how to plant and hill it." (Palfrey) Origin: Hilled; Hilling. Source: Websters Dictionary (01 Mar 1998) |
| Hill coefficient | A measure of cooperativity in a binding process. A Hill coefficient of 1 indicates independent binding, a value of greater than 1 shows positive cooperativity binding of one ligand facilitates binding of subsequent ligands at other sites on the multimeric receptor complex. Worked out originally for the binding of oxygen to haemoglobin (Hill coefficient of 2.8). (18 Nov 1997) |