a. [f. as prec. + -FORM; cf. F. cirriforme.] Cirrus-shaped.
1. Meteor. (see CIRRUS 4.)
1815. T. Forster, Res. Atmosph. Phenom., i. § 5. 15. Of the cloud … the other part remains cirriform.
1883. Athenæum, 30 June, 833/2. Of the cirriform clouds, one of the most important to the weather forecaster is … cirro-filum.
2. Zool.
1856–8. W. Clark, Van der Hoeven’s Zool., II. 76. Ventral fins narrow, setaceous or cirriform.
1877. Huxley, Anat. Inv. Anim., v. 232. Five cirriform appendages.
