| 释义 |
zonal, a.|ˈzəʊnəl|
[ad. mod.L. zōnālis, f. L. zōna zone.]
1. a. Characterized by or arranged in zones, circles, or rings; of the nature of or forming a zone.
1873A. Wilson Elem. Zool. i. ii. 22 In ‘zonal’ symmetry the merosomes are arranged in zones, one after another, in a longitudinal axis. 1888Rutley Rock-Forming Min. 124 The small spherical crystalline aggregates show..a concentric zonal structure.
b. Marked with zones or circular bands of colour: applied to varieties of pelargonium or geranium having the leaves so marked.
1868Morn. Star 17 June, The cultivators of zonal pelargoniums, or variegated leaf-coloured geraniums, had a grand competition. 1908Nation 22 Feb. 756/2 The zonal geranium.
2. Math. and Cryst. Relating to a zone or zones of a sphere, or of a crystalline form: see zone n. 8.
1867Thomson & Tait Nat. Phil. §781 These circles..are..all in parallel planes..and cut the spherical surface into zones, in which case the harmonic is called zonal.
3. Pertaining or relating to, involving, or constituting a ‘zone’ or ‘zones’, i.e. regions or areas distinctively characterized in some way: see zone n. 2 b, 7.
1882Knowledge 7 July 92 The six zonal areas we have thus described will serve our purpose admirably for grouping together our Seaside Health-Resorts. 1890Nature 4 Sept. 454/2 Zonal divisions are based upon these bogus species and conclusions drawn from them. 1893Geikie Text-bk. Geol. vi. iii. i. (ed. 3) 876 In tracing the zonal parallelism of the Triassic succession within the Alps themselves. 1904Edin. Rev. Jan. 219 The study..of strata characterised by the dominance of a zone-fossil forms zonal geology. 1909Spectator 29 May 856/2 The companies adopted a zonal tariff (as the State has done for telephone purposes).
4. Soil Sci. [a. F. zonal (N. Sibirtsev 1897, in Compt. Rend. de la VII⊇. Session, Congr. géol. internat. (1899) II. iii. v. 80).] Of a soil: regarded as characteristic of a particular climatic or geographic zone and as reflecting the predominant influence of the climate in its formation.
1908Jrnl. Agric. Sci. III. 84 The seven fundamental groups of ‘zonal’ soils just enumerated are spread over the surface of large continents in zones which coincide with the physico-geographical zones of those continents. 1927, etc. [see intrazonal a.]. 1952[see azonal a.]. 1972J. G. Cruickshank Soil Geogr. iv. 110 Apart from being an over-simplification of reality, the zonal system had the unfortunate effect of restricting, in the mind of the student, the distribution of each zonal soil within the limits of its climatic zone.
Hence zoˈnality, zonal character or distribution; ˈzonally adv., in or according to zones.
1873A. Wilson Elem. Zool. i. ii. 22 The segments..of the body, which are arranged zonally along a longitudinal axis. 1889Amer. Nat. XXIII. 814 Crystals of the hyacinth variety of quartz..contain numerous inclusions of anhydrite arranged zonally. 1909Daily Chron. 21 Mar. 3/5 The zonality of the flowers. |