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Related to isohyet: isobar, isotherm


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

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


(Physical Geography) a line on a map connecting places having equal rainfall
[C19: from iso- + -hyet, from Greek huetos rain]


(ˌaɪ səˈhaɪ ət)

a line drawn on a map connecting points having equal rainfall at a certain time or for a stated period.
[1895–1900; iso- + -hyet < Greek hyetós rain]
i`so•hy′et•al, adj.


A line drawn on a map linking places that have the same rainfall.


[ˌaɪsəʊˈhaɪɪt] nisoieta
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References in periodicals archive ?
The limit between the subhumid and semiarid zones is represented by the 500 mm isohyet. The area situated between 500 and 1000 mm/year presents a subhumid climate, and the climate is humid when it exceeds 1000 mm.
This important geography line approximates coincided with the 0 January isotherm and the 800 mm isohyet in China.
The Brazilian semiarid is approximately delimited by the 1,000 mm isohyet, which closely matches the delimitation of the CPD (IBGE, 2004; Nimer, 1972).
The vegetation is characterized by an area of tropical dry forest from the shores of Lake Maracaibo to approximately isohyet 10 of 1,800 mm, the rest is represented by tropical wet forest [8].
A Isobar B Isohyet C Isotherm D Isopleth QUESTION 10 - for 10 points: Which type of drug is used to treat allergic reactions?
It looks as if this shift can be explained when we observe that the 200 mm isohyet divides the studied region into two areas, one in the south extending to Wadi Farah and the second north of this wadi.
Preparing the geological maps, slope, land use, high altitudes, groundwater level, decline, isohyet, and isothermal status.
The early winter's first approach of the so-called 540 isohyet, where it is zero degrees Celcius on the surface, lies only a hundred kilometres south of Cape Town by Tuesday, and the effect of the cold will be felt across the entire Namibia.
This value should exclude Ngaoundere from the African meningitis belt, for which the southern limit of annual rainfall was classically considered to be the 1,100-mm isohyet (Figure).
In the early twentieth century, Thomas Griffith Taylor, a prominent early geographer, in a major work on Australian rainfall and the climatic factors limiting agriculture and settlement, had perceptively described the line as an 'ecological isopleth' (8), and the historian Archibald Grenfell Price had seen in it a 'vegetation line' (9), but the explanation that had become widely accepted and entrenched in the first half of the twentieth century was that the line approximated an isohyet of average annual rainfall.
Land area (Mha) of 4 GRDC agro-ecological zones divided by 500 mm mean annual rainfall (MAR) isohyet GRDC agro-ecological zone <500 mm MAR >500 mm MAR NSW-Vic.