WordReference Random House Unabridged Dictionary of American English © 2026
cir•ri•form
(sir′ə fôrm′),USA pronunciation adj.
- Meteorologyof or pertaining to clouds composed of ice crystals, as cirrus, cirrostratus, and cirrocumulus clouds.
- cirri- + -form 1805–15
'cirriform' also found in these entries (note: many are not synonyms or translations):