a marking on the sun's surface or in its atmosphere, as seen on a spectroheliogram. It consists of calcium when lighter than the surroundings and of hydrogen when darker a tiny ovoid prominence on each side of the cerebellum
WordReference Random House Unabridged Dictionary of American English © 2025
floc•cu•lus
(flok′yə ləs),USA pronunciation n., pl. -li
-
(-lī′).USA pronunciation
- floccule.
- Astronomyone of the bright or dark patches on the sun's surface, visible in a spectroheliogram.
- Neo-Latin; see floccule
- 1790–1800
Collins Concise English Dictionary © HarperCollins Publishers::
'flocculus' also found in these entries (note: many are not synonyms or translations):