No doubt the protrusion of the cirri effectively aids the act of opening.
Some are close-packed and dense, like cumuli; some are wispy or mottled, like cirri.
The cirri resemble those of E. Kingii; the segments in the sixth pair are equally elongated, and bear five or six pairs of spines.
The pedicels of all the cirri are thickly covered with bristles.
Each of the segments has a pair of parapodia, bearing a bundle of bristles and cirri.
Pedicels of the cirri not particularly protuberant in front.
The third pair have only inverted conical segments, coloured darker purple than the other cirri.
His cello pieces, of which several were published, are as obsolete as those of cirri.
These motions of the cirri seem passive, like those of a valve that obeys the thrust of a liquid.
From the lower part of the body hang numerous tentacles (cirri), amidst which the mouth is placed.
1708, "curl-like fringe or tuft," from Latin cirrus "a lock of hair, tendril, curl, ringlet of hair; the fringe of a garment." In meteorology, cirrus clouds attested from 1803. So called from fancied resemblance of shape.
Plural cirri (sîr'ī')
A high-altitude cloud composed of feathery white patches or bands of ice crystals. Cirrus clouds generally form between 6,100 and 12,200 m (20,000 and 40,000 ft). See illustration at cloud.