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. 2023
How to use cirriform in a sentence
No dorsal cirriform process on III or any other segment, all being wholly smooth.
Mesad of the branchial process of each parapodium of the first four pairs is a cirrus or cirriform process.