| Hassall's concentric corpuscle | Small spherical bodies of keratinised and usually squamous epithelial cells arranged in a concentric pattern around clusters of degenerating lymphocytes, eosinophils, and macrophages; found in the medulla of the lobules of the thymus. Synonym: Hassall's bodies, Hassall's concentric corpuscle, Virchow-Hassall bodies. (05 Mar 2000) |
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| Hassall-Henle bodies | Hyaline body's on the posterior surface of Descemet's membrane at the periphery of the cornea. Synonym: Henle's warts. (05 Mar 2000) |
| Hasselbalch | Karl, Danish biochemist and physician, 1874-1962. See: Henderson-Hasselbalch equation. (05 Mar 2000) |
| hastate | <botany> A type of leaf shape, generally like an arrowhead but with triangular lobes branching out from the base of the leaf approximately at right angles. (09 Oct 1997) |
| hastated | Shaped like the head of a halberd; triangular, with the basal angles or lobes spreading; as, a hastate leaf. Origin: L. Hastatus, fr. Hasta spear. Cf. Gad. Source: Websters Dictionary (01 Mar 1998) |
| hastile | <botany> Same as Hastate. Origin: L. Hasta a spear. Source: Websters Dictionary (01 Mar 1998) |
| hastings | Early fruit or vegetables; especially, early pease. Origin: From Haste. Source: Websters Dictionary (01 Mar 1998) |
| hastings sands | <geology> The lower group of the Wealden formation; so called from its development around Hastings, in Sussex, England. Source: Websters Dictionary (01 Mar 1998) |
| hastive | Forward; early; said of fruits. Origin: OF. Hastif. See Haste, and cf. Hastif. Source: Websters Dictionary (01 Mar 1998) |
| hasty | 1. Involving haste; done, made, etc, in haste; as, a hasty sketch. 2. Demanding haste or immediate action. "Hasty employment." 3. Moving or acting with haste or in a hurry; hurrying; hence, acting without deliberation; precipitate; rash; easily excited; eager. 4. Made or reached without deliberation or due caution; as, a hasty conjecture, inference, conclusion, etc, a hasty resolution. 5. Proceeding from, or indicating, a quick temper. "Take no unkindness of his hasty words." (Shak) 6. Forward; early; first ripe. "As the hasty fruit before the summer." (Is. Xxviii. 4) Origin: Akin to D. Haastig, G, Sw, & Dan. Hastig. See Haste. Source: Websters Dictionary (01 Mar 1998) |