cumulostratus (ku"mulostratus)

[NL., sus: see cumulose.] Resembling cumuli; cumuliform; cumulose: applied to clouds. A series of white cumulous clouds, such as are frequently seen piled up near the horizon on a summer's day. • Newcomb and Holden , Astron., p. 345. cumulus (kū'mū-lus), n.; pl. cumuli (-lī). [L. cumulus, a heap, whence ult. cumble, cumber, n., and cumulate, accumulate, etc.] 1. The kind of cloud which appears in the form of rounded heaps or hills, snowy-white at top with a darker horizontal base, characteristic of mild, calm weather, especially in summer; the summer day cloud. See cut under cloud1, 1. The vapours rolled away, studding the mountains with small flocks of white wool-like cumuli. W. H. Ru ell , Diary in India, II. 106. 2. In an at . , a heap of cells surrounding a ripe ovum in the Graafian follicle, and constituting the discus pro liger us.