| 释义 |
dendrite|ˈdɛndraɪt|
Also in Lat. form dendrites |dɛnˈdraɪtiːz|, pl. dendritæ |-tiː|.
[ad. Gr. δενδρίτης of or pertaining to a tree, f. δένδρον tree: see -ite. In F. dendrite (1732 in Trévoux).]
1. A natural marking or figure of a branching form, like a tree or moss, found on or in some stones or minerals; a stone or mineral so marked.
1727–51Chambers Cycl. s.v., In some dendrites, the figures, or signatures, penetrate quite through. 1774Strange in Phil. Trans. LXV. 35 It is also variegated by frequent dendrites. 1825Coleridge Aids Refl. (1848) I. 27 As dendrites derive the outlines..from the casual neighbourhood and pressure of the plants. 1863Lyell Antiq. Man vii. (ed. 3) 116 Those ramifying crystallizations called dendrites usually consisting of the mixed oxyds of iron and manganese, forming extremely delicate brownish sprigs, resembling the smaller kinds of sea-weeds.
Comb.1856Stanley Sinai & Pal. i. (1858) 45 The older travellers..all notice what they call Dendrite-stones,—i.e. stones with fossil trees marked upon them.
2. A crystalline growth of branching or arborescent form, as of some metals under electrolysis.
1882A. S. Herschel in Nature No. 642. 363 After a few hours of charging, the rough dendrites of humus-coloured substance acquired frond-like form.
3. Anat. Any of one or more processes from a nerve cell which are typically short and extensively branched and which conduct impulses towards the cell body.
1893,1899[see dendron]. 1900W. S. Hall Physiology 535 The dendrites, or protoplasmic processes, resemble more closely in appearance the cell-body itself than does the axon. 1902Encycl. Brit. XXV. 394/2 In the simplest cases the dendrites carry the sensory impulse to the nerve-cell. 1927Haldane & Huxley Anim. Biol. i. 40 Shorter branched outgrowths (dendrites). 1962Lancet 29 Dec. 1359/2 The cell bodies and dendrites of both cerebral and cerebellar cortex are indeed conspicuously rich in protein. 1967[see dendron].
Hence denˈdritiform a., having the form or appearance of a dendrite.
1890in Cent. Dict. |