cumulo-

At sunset the thermometer was at 55°; the evening clear and calm, with some cumuli.

Some are close-packed and dense, like cumuli; some are wispy or mottled, like cirri.

The moon emerged from behind a cloud, touching with a delicate sepia some fleecy edge of cumuli.

White clouds rising in the east gather into cumuli, with an increasing blackness along their lower portions.

The wind was generally from the eastward during the morning, with cumuli; but these disappeared in the afternoon.

Weird was the hectic flushing, the glow of the sheet lightning among the July and August cumuli.

White clouds now appear in the east, and gather into cumuli, with an increasing blackness along their lower portions.

The cumuli resembled mountains in shape, and their peaked summits shone as white as Alpine snows.

cumuli passed from the north-east during the morning: the afternoon was clear, and the night bright.

cumuli rolled up the sky one after another, until their black masses shrouded the moon.