Wiktionary
flocculent spiral galaxy
n. (context galaxy English) a spiral galaxy with discontinuous spiral arms
Wikipedia
Flocculent spiral galaxy
A flocculent spiral galaxy is a type of spiral galaxy, that is the functional opposite of the grand design spiral galaxy. Unlike the well defined spiral architecture of a grand design galaxy, flocculent galaxies are patchy, with discontinuous spiral arms. Approximately 30% of spirals are flocculent, 10% are grand design, and the rest are "multi-armed". The "multiple arm" type is sometimes folded into the flocculent-type.
The prototypical flocculent spiral is NGC 2841.