| symplasmatic | Relating to the union of protoplasm as in giant cell formation. Origin: G. Sym-plasso, to mold together (05 Mar 2000) |
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| symplast | <plant biology> The intracellular compartment of plants, consisting of the cytosol of a large number of cells connected by plasmodesmata. (19 Jan 1998) |
| symplectic | <anatomy> Plaiting or joining together; said of a bone next above the quadrate in the mandibular suspensorium of many fishes, which unites together the other bones of the suspensorium. The symplectic bone. Origin: Gr. Plaiting together, fr. To plait together. Source: Websters Dictionary (01 Mar 1998) |
| symplectic metachronism | <cell biology> Type of synchrony found in the beating of cilia. A metachronal process is one that happens at a later time and the synchronisation is such that the active stroke of an adjacent cilium is slightly delayed so as to minimise the hydrodynamic interference, coordination is by visco mechanical coupling. Different patterns of metachronal synchronisation are recognised: Symplectic metachronism: the wave of activity in the field passes in the same direction as the active stroke of the individual cilium. Antiplectic metachronism: the opposite is true. In dexioplectic and laeoplectic metachronism the wave of activity in the field is normal to the beat axis. Symplectic and antiplectic metachronism are considered orthoplectic, the other forms as diaplectic. (05 Jan 1998) |
| sympode | <botany> A sympodium. Source: Websters Dictionary (01 Mar 1998) |
| sympodia | Condition characterised by union of the feet. See: sirenomelia, sympus. Origin: sym-+ G. Pous, foot (05 Mar 2000) |
| sympodial | <plant biology> Of growth, without a single, persistent growing point, changing direction by frequent replacement of the growing apex by a lateral growing point below it, of a stem, growing in the above manner. Compare: monopodial. (19 Jan 1998) |
| sympodium | Origin: NL, fr. Gr. With +, dim. Of, foot. <botany> An axis or stem produced by dichotomous branching in which one of the branches is regularly developed at the expense of the other, as in the grapevine. Source: Websters Dictionary (01 Mar 1998) |
| symport | <cell biology, physiology> A mechanism of transport across a membrane in which two different molecules move in the same direction. Often, one molecule can move up an electrochemical gradient because the movement of the other molecule is more favourable. See: antiport, uniport, facilitated diffusion. (19 Jan 1998) |
| symporter | The protein responsible for mediating symport. (05 Mar 2000) |
| symptom | Any subjective evidence of disease or of a patients condition, i.e. Such evidence as perceived by the patient, a change in a patients condition indicative of some bodily or mental state. Origin: L. Symptoma, Gr. Symptoma = anything that has befallen one (18 Nov 1997) |
| symptom formation | An unconscious psychological process by which a repressed impulse is indirectly manifested through a particular symptom, e.g., anxiety, compulsion, depression, hallucination, obsession. Synonym: symptom formation. (05 Mar 2000) |
| symptom group | See: syndrome, complex. (05 Mar 2000) |
| symptom score | American Urological Association's scoring system to evaluate prostatic obstruction. (05 Mar 2000) |
| symptom substitution | An unconscious psychological process by which a repressed impulse is indirectly manifested through a particular symptom, e.g., anxiety, compulsion, depression, hallucination, obsession. Synonym: symptom formation. (05 Mar 2000) |