| hypobaria | <physiology> Dysbarism resulting from decreasing barometric pressure on the body without hypoxia; gas in body cavities tends to expand, and gases dissolved in body fluids tend to come out of solution as bubbles. Compare: decompression sickness. Synonym: hypobaria. (05 Mar 2000) |
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| hypobaric | 1. <physics> Pertaining to pressure of ambient gases below 1 atmosphere. 2. <chemistry> With respect to solutions, less dense than the diluent or medium; e.g., in spinal anaesthesia, a hypobaric solution has a density lower than that of spinal fluid. Origin: hypo-+ G. Baros, weight (05 Mar 2000) |
| hypobaric spinal anaesthesia | <anaesthetics> Spinal anaesthesia in which spread of local anaesthetic solution in the subarachnoid space is controlled by adjusting the position of the patient when the density of the local anaesthetic solution is made less than the density of cerebrospinal fluid (i.e., hypobaric) by the addition of distilled water. (05 Mar 2000) |
| hypobarism | <physiology> Dysbarism resulting from decreasing barometric pressure on the body without hypoxia; gas in body cavities tends to expand, and gases dissolved in body fluids tend to come out of solution as bubbles. Compare: decompression sickness. Synonym: hypobaria. (05 Mar 2000) |
| hypobaropathy | <physiology> Sickness produced by reduced barometric pressure; not always distinguished from hypobarism and altitude sickness. Origin: hypo-+ G. Baros, weight, + pathos, suffering (05 Mar 2000) |
| hypobetalipoproteinaemia | <biochemistry> A disease in which the low density lipoprotein (beta-lipoprotein) concentrations are far below normal. (12 Dec 1998) |
| hypobetalipoproteinaemia with apo B-37 | A disorder in which LDL levels are very low, there is a mild fat malabsorption, and a truncated apolipoprotein B-37 is formed. (05 Mar 2000) |
| hypoblast | <biology> The inner or lower layer of the blastoderm; called also endoderm, entoderm, and sometimes hypoderm. Source: Websters Dictionary (01 Mar 1998) |
| hypoblastic | <biology> Relating to, or connected with, the hypoblast; as, the hypoic sac. Source: Websters Dictionary (01 Mar 1998) |
| hypobranchial | <anatomy> Pertaining to the segment between the basibranchial and the ceratobranchial in a branchial arch. A hypobranchial bone or cartilage. Origin: Pref. Hypo- + branchial. Source: Websters Dictionary (01 Mar 1998) |
| hypobranchial eminence | <anatomy> A median elevation in the floor of the embryonic pharynx caudal to the tuberculum impar. It merges laterally with the ventral part of the second and third branchial arches, and in later development is incorporated in the root of the tongue. Synonym: copula linguae, His' copula. (05 Mar 2000) |
| hypobromite | <chemistry> A salt of hypobromous acid. (05 Mar 2000) |
| hypobromous acid | <chemical> An acid, HOBr, the aqueous solution of which possesses oxidizing and bleaching properties. (05 Mar 2000) |
| hypocalcaemia | <biochemistry> Abnormally low calciumconcentration, that can result in muscle cramps, abdominal cramps, spasms, and hyperactive deep tendon reflexes. Low blood calcium can be seen in cases of hypoparathyroidism, low vitamin D intake, pregnancy, osteomalacia and certain kidney diseases. Normal blood calcium should be in the range of 8.5 to 10.5 mg/dl. Compare: hypercalcaemia. Origin: Gr. Haima = blood (11 Jan 1998) |
| hypocalcaemic cataract | <ophthalmology> A cataract occurring with low serum calcium. (05 Mar 2000) |