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isogon
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isogonal line
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Also available:
World English Dictionary
Dictionnaire Français
isohel
i·so·hel
[
ssə hèl
]
(
plural
i·so·hels
)
noun
Definition:
line showing hours of sunlight:
a line on a map connecting places that receive the same number of hours of sunshine in the course of a year
[
Early 20th century. <iso- + Greek
hēlios
"sun"
]
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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