| sickling | Production of sickle-shaped erythrocytes in the circulation, as in sickle cell anaemia. (05 Mar 2000) |
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| sickly | 1. Somewhat sick; disposed to illness; attended with disease; as, a sickly body. "This physic but prolongs thy sickly days." (Shak) 2. Producing, or tending to, disease; as, a sickly autumn; a sickly climate. 3. Appearing as if sick; weak; languid; pale. "The moon grows sickly at the sight of day." (Dryden) "Nor torrid summer's sickly smile." (Keble) 4. Tending to produce nausea; sickening; as, a sickly smell; sickly sentimentality. Synonym: Diseased, ailing, infirm, weakly, unhealthy, healthless, weak, feeble, languid, faint. Origin: Sicklier; Sickliest. Source: Websters Dictionary (01 Mar 1998) |
| sickness | 1. The quality or state of being sick or diseased; illness; sisease or malady. "I do lament the sickness of the king." (Shak) "Trust not too much your now resistless charms; Those, age or sickness soon or late disarms." (Pope) 2. Nausea; qualmishness; as, sickness of stomach. Synonym: Illness, disease, malady. See Illness. Origin: AS. Seocness. Source: Websters Dictionary (01 Mar 1998) |
| sickness impact profile | A quality-of-life scale developed in the united states in 1972 as a measure of health status or dysfunction generated by a disease. It is a behaviourally based questionnaire for patients and addresses activities such as sleep and rest, mobility, recreation, home management, emotional behaviour, social interaction, and the like. It measures the patient's perceived health status and is sensitive enough to detect changes or differences in health status occurring over time or between groups. (12 Dec 1998) |
| sida | <botany> A genus of malvaceous plants common in the tropics. All the species are mucilaginous, and some have tough ligneous fibres which are used as a substitute for hemp and flax. Origin: NL, fr. Gr. A kind of plant. Source: Websters Dictionary (01 Mar 1998) |
| side | 1. Of or pertaining to a side, or the sides; being on the side, or toward the side; lateral. "One mighty squadron with a side wind sped." (Dryden) 2. Hence, indirect; oblique; collateral; incidental; as, a side issue; a side view or remark. "The law hath no side respect to their persons." (Hooker) 3. [AS. Sid. Cf Side] Long; large; extensive. "His gown had side sleeves down to mid leg." (Laneham) Side action, in breech-loading firearms, a mechanism for operating the breech block, which is moved by a lever that turns sidewise. Side arms, weapons worn at the side, as sword, bayonet, pistols, etc. Side ax, an ax of which the handle is bent to one side. Side-bar rule, a rule authorised by the courts to be granted by their officers as a matter of course, without formal application being made to them in open court; so called because anciently moved for by the attorneys at side bar, that is, informally. Side box, a box or inclosed seat on the side of a theater. "To insure a side-box station at half price." (Cowper) Side chain, one of two safety chains connecting a tender with a locomotive, at the sides. Side cut, a canal or road branching out from the main one. Side dish, one of the dishes subordinate to the main course. Side glance, a glance or brief look to one side. Side hook, a cutting tool, used in a lathe or planer, having the cutting edge at the side instead of at the point. Side wind, a wind from one side; hence, an indirect attack, or indirect means. Source: Websters Dictionary (01 Mar 1998) |
| side chain | A chain of noncyclic atoms linked to a benzene ring, or to any cyclic chain compound, the atoms of an alpha-amino acid other than the alpha-carboxyl group, the alpha-amino group, the alpha-carbon, and the hydrogen attached to the alpha-carbon. (05 Mar 2000) |
| side effect | <pharmacology> A consequence other than the one for which an agent or measure is used, as the adverse effects produced by a drug, especially on a tissue or organ system other than the one sought to be benefited by its administration. For example: hair loss may be a side effect of chemotherapy, fatigue may be a side effect of radiation therapy. (14 Oct 1997) |
| side effects | Problems that occur when treatment affects healthy cells. Common side effects of cancer treatment are fatigue, nausea, vomiting, decreased blood cell counts, hair loss, and mouth sores. (12 Dec 1998) |
| side-chain theory | Ehrlich postulated that cells contained surface extensions or side chains (haptophores) that bind to the antigenic determinants of a toxin (toxophores); after a cell is stimulated, the haptophores are released into the circulation and become the antibodies. See: receptor. Synonym: Ehrlich's postulate. (05 Mar 2000) |
| sidebone | <veterinary> A morbid growth or deposit of bony matter and at the sides of the coronet and coffin bone of a horse. Source: Websters Dictionary (01 Mar 1998) |
| sidebones | Ossification of the lateral cartilages of the horse's foot, seen most often in the forefeet of the heavier working breeds; exostoses often appear, and may be seen and palpated above the hoof line. (05 Mar 2000) |
| sideral | 1. Relating to the stars. 2. <astronomy> Affecting unfavorably by the supposed influence of the stars; baleful. "Sideral blast." Origin: L. Sideralis. See Sidereal. Source: Websters Dictionary (01 Mar 1998) |
| sideramine | <biochemistry> Naturally occurring iron binding compounds, hydroxamic acids. (18 Nov 1997) |
| sideration | The state of being siderated, or planet-struck; especially, blast in plants; also, a sudden and apparently causeless stroke of disease, as in apoplexy or paralysis. Origin: L. Sideratio. Source: Websters Dictionary (01 Mar 1998) |