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View definitions for zenithal

zenithal

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Example Sentences

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The quality of the display is measured by how many meteors are visible every hour - known as the zenithal hourly rate.

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The zenithal hourly rate could be close to 120 meteors per hour, though this peak lasts only a couple of hours.

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The group predicts a zenithal hourly rate of about 90 shooting stars around the peak.

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When drawing up a map, a cartographer must choose between zenithal, gnomonic, stereographic, orthographic, globular, conical, cylindrical or sinusoidal modes of projection — each of which brings with it as many disadvantages as benefits.

Read more on The New Yorker

At peak, the zenithal hourly rate is expected to be about 120 shooting stars an hour, according to the International Meteor Organization.

Read more on Washington Post

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From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

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