Flocculus

Definitions

  • Webster's Revised Unabridged Dictionary
    • n Flocculus (Anat) A small lobe in the under surface of the cerebellum, near the middle peduncle; the subpeduncular lobe.
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Century Dictionary and Cyclopedia
    • n flocculus A small flock of wool or something resembling it; a small tuft; a shred; a flake.
    • n flocculus Specifically In anatomy, a tuft-like lobe of the cerebellar hemisphere on either side behind and below the middle peduncle of the cerebellum. The nodulus connects the two flocculi. Also called sub-peduncular lobe and pneumogastric lobule.
    • n flocculus In entomology, a small bunch of fine curved hairs; particularly, a bunch of stiff hairs found on the posterior coxæ of certain hymenopterous insects.
    • n flocculus In chem. and physics, a small aggregation of particles formed by the agitation of a liquid containing them.
    • n flocculus in astronomy, a name given by Hale to cloudy wisps, bright or dark, with which the sun's surface appears to be covered when photographed with the spectroheliograph by the light of some special wave-length, as, for instance, through a line in the spectrum due to some special element such as calcium, hydrogen, or iron.
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Chambers's Twentieth Century Dictionary
    • ns Flocculus a small flock or tuft: a small lobe of the inferior surface of the cerebellum
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Etymology

Webster's Revised Unabridged Dictionary
NL., dim. of L. floccus, a lock or flock of wool
Chambers's Twentieth Century Dictionary
O. Fr. floc—L. floccus, a lock of wool.

Usage

In literature:

Flocculus -i: a hairy or bristly appendage on the posterior coxa of some Hymenoptera.
"Explanation of Terms Used in Entomology" by John. B. Smith
Each flocculus, in describing its course, must give motion to the medium through which it is moving.
"Essays: Scientific, Political, & Speculative, Vol. I" by Herbert Spencer
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In news:

The results reveal that pterosaurs had a giant flocculus, a brain region responsible for keeping track of the body's location and for coordinating the movement of the eyes.
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