[ sir-uh-fawrm ]
/ ˈsɪr əˌfɔrm /
of or relating to clouds composed of ice crystals, as cirrus, cirrostratus, and cirrocumulus clouds.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for cirriform
Mesad of the branchial process of each parapodium of the first four pairs is a cirrus or cirriform process.