87. Clouds


See also 27. ATMOSPHERE ; 345. RAIN ; 375. SNOW ; 417. WEATHER .

ceilometer
an instrument for measuring by triangulation and recording the distance between the earth and the cloud ceiling.
nephelognosy
divination by the observation of clouds.
nepheloscope
an apparatus for expanding moist air to demonstrate the process of cloud formation.
nephogram
a photograph of clouds, taken with a nephograph.
nephograph
an instrument for photographing clouds and producing nephrograms.
nephology
the branch of meteorology that studies clouds. — nephologic, nephological , adj . — nephologist , n .
nephophobia
an abnormal fear of clouds.
noctilucence
the condition of being visible during the short summer nights, especially high-altitude clouds. — noctilucent adj .
nubilation
1. the formation or arrangement of clouds.
2. the obscuration caused by clouds.

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