| decubitus ulcer | <dermatology> A chronic ulcer that appears in pressure areas in debilitated patients confined to bed or otherwise immobilised, due to a circulatory defect from the enhanced tissue pressure in high-contact areas, often occurring over a bony prominence (for example sacral decubitus). (27 Sep 1997) |
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| decumbent | Spreading horizontally but then growing upwards. (09 Oct 1997) |
| decumbiture | 1. Confinement to a sick bed, or time of taking to one's bed from sickness. 2. <astronomy> Aspect of the heavens at the time of taking to one's sick bed, by which the prognostics of recovery or death were made. Source: Websters Dictionary (01 Mar 1998) |
| decurion | A head or chief over ten; especially, an officer who commanded a division of ten soldiers. Origin: L. Decurio, decurionis, fr. Decuria a squad of ten, fr. Decem ten. Source: Websters Dictionary (01 Mar 1998) |
| decurrent | Extending downwards beyond the point of insertion. (09 Oct 1997) |
| decursively | In a decursive manner. <botany> Decursively pinnate, having the leaflets decurrent, or running along the petiole; said of a leaf. Source: Websters Dictionary (01 Mar 1998) |
| decussate | In pairs, with successive pairs borne at right angles to each other. (09 Oct 1997) |
| decussated | 1. Crossed; intersected. 2. <botany> Growing in pairs, each of which is at right angles to the next pair above or below; as, decussated leaves or branches. 3. Consisting of two rising and two falling clauses, placed in alternate opposition to each other; as, a decussated period. Source: Websters Dictionary (01 Mar 1998) |
| decussatio | 1. In general, any crossing over or intersection of parts. 2. The intercrossing of two homonymous fibre bundles as each crosses over to the opposite side of the brain in the course of its ascent or descent through the brainstem or spinal cord. Synonym: decussation. Origin: L. (see decussate) (05 Mar 2000) |
| decussatio brachii conjunctivi | The decussation of the left and right superior cerebellar peduncles in the tegmentum of the caudal mesencephalon. Synonym: decussatio pedunculorum cerebellarium superiorum, decussatio brachii conjunctivi, decussation of brachia conjunctiva, Wernekinck's decussation. (05 Mar 2000) |
| decussatio fontinalis | See: decussationes tegmenti. (05 Mar 2000) |
| decussatio lemniscorum | The intercrossing of the fibres of the left and right medial lemniscus ascending from the gracile and cuneate nuclei, immediately rostral to the level of the decussation of the pyramidal tracts in the medulla oblongata. Synonym: decussatio lemniscorum, decussatio sensoria, decussation of the fillet, sensory decussation of medulla oblongata. (05 Mar 2000) |
| decussatio motoria | An alternate term for pyramidal decussation. (05 Mar 2000) |
| decussatio nervorum trochlearium | The crossing of the two trochlear nerves at their exit through the velum medullare anterius. Synonym: decussatio nervorum trochlearium. (05 Mar 2000) |
| decussatio pedunculorum cerebellarium superiorum | The decussation of the left and right superior cerebellar peduncles in the tegmentum of the caudal mesencephalon. Synonym: decussatio pedunculorum cerebellarium superiorum, decussatio brachii conjunctivi, decussation of brachia conjunctiva, Wernekinck's decussation. (05 Mar 2000) |