Retinaculum(Anat) A connecting band; a frænum; as, the retinacula of the ileocæcal and ileocolic valves.
Retinaculum(Bot) A small gland or process to which bodies are attached; as, the glandular retinacula to which the pollinia of orchids are attached, or the hooks which support the seeds in many acanthaceous plants.
Retinaculum(Anat) One of the annular ligaments which hold the tendons close to the bones at the larger joints, as at the wrist and ankle.
Retinaculum(Zoöl) One of the retractor muscles of the proboscis of certain worms.
Century Dictionary and Cyclopedia
nretinaculumIn botany: A viscid gland belonging to the stigma of orchids and asclepiads. and holding the pollen-masses fast.
nretinaculumThe persistent and indurated hook-like funiculus of the seeds in most Acanthaceæ. A. Gray.
nretinaculumIn anatomy, a restraining band; a bridle or frenum: applied to such fibrous structures as those which bind down the tendons of muscles; also to the bridle of the ileocæcal valve.
nretinaculumIn entomology, specifically, a small scale or plate which in some insects checks undue protrusion of the sting.
nretinaculumIn surgery, an instrument formerly used in operations for hernia, etc.
nretinaculumIn entomology: An arrangement of hooks, or of hooks and bristles, whereby the fore and hind wings of insects are interlocked when in flight.
Chambers's Twentieth Century Dictionary
nRetinaculumret-i-nak′ū-lum (anat.) a connecting band: one of the annular ligaments which hold the tendons close to the bones of the larger joints: :
nRetinaculumret-i-nak′ū-lum (zool.) one of the retractor muscles of the proboscis of certain worms
nRetinaculumret-i-nak′ū-lum (bot.) a small viscid gland.
Webster's Revised Unabridged Dictionary
L., a holdfast, a band. See Retain
Retinaculum: in Lepidoptera, the loop into which the frenulum of the male is fitted; = hamus, q.v.
"Explanation of Terms Used in Entomology" by John. B. Smith
For example, constant snapping at the outer ankle subsequent to a major ankle sprain is a strong indicator or rupture of the retinaculum that binds the peroneal tendons down.