zenithal rain

zenithal rain

[′zē·nə·thəl ′rān]
(meteorology)
In the tropics or subtropics, the rainy season which recurs annually or semiannually at about the time that the sun is most nearly overhead (at zenith).
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

zenithal rain

In the tropics or subtropics, the rainy season that recurs annually or semiannually at about the time the sun is most nearly overhead (at its zenith).
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
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