/ Dictionary / Index C cirriform: Meaning and Definition of Find definitions for: cir•ri•form Pronunciation: (sir'u-fôrm"), [key] — adj. of or pertaining to clouds composed of ice crystals, as cirrus, cirrostratus, and cirrocumulus clouds. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cirri cirriped Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language