from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A line drawn on a map connecting points that receive equal amounts of rainfall.

from The Century Dictionary.

  • noun Same as isohyetal. Also isohyetose.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A line of equal or constant rainfall on a graph or chart, such as a weather map.


from The American Heritage® Dictionary of the English Language, 4th Edition

[iso– + Greek hūetos, rain; see seuə- in Indo-European roots.]


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  • Delineated by White's regs, hamadas and wadis vegetation type, the northern border of the ecoregion lies several hundred kilometers (km) north of the 100 mm rainfall isohyet, which is the northern limit of summer grassland pasture composed of the grasses Eragrostis, Aristida, and Stipagrostis spp. with the herbs Tribulus, Heliotropium, and Pulicharia.

    South Saharan steppe and woodlands

  • The reserve has a hot arid continental desert climate and lies just beyond the 100 millimeters (mm) average annual isohyet.

    Aïr and Ténéré Natural Reserves, Niger

  • However, the poverty of the increasing human population forces people to attempt growing rain fed crops such as millet and sorghum well north of the isohyet limit where these crops will regularly succeed.

    Sahelian Acacia savanna

  • The Namib Desert is nested within the ‘Namib’ biogeographical province of Udvardy and the ‘Namib Desert’ unit of White, with the eastern boundary taken from the 100 mm rainfall isohyet.

    Namib desert

  • The boundary between them coincides with isohyet 500 mm and should be roughly along the meridian 100 ° W

    Article directories Celibataire Urbaine


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