• Webster's Revised Unabridged Dictionary
    • Malleolus (Anat) A projection at the distal end of each bone of the leg at the ankle joint. The malleolus of the tibia is the internal projection, that of the fibula the external.
    • Malleolus “ A layer, ” a shoot partly buried in the ground, and there cut halfway through.
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Century Dictionary and Cyclopedia
    • n malleolus In anatomy, a bony protuberance on either side of the ankle. The two together contribute to the stability of the ankle-joint, by locking the astragalus so as to prevent lateral and rotatory movements. In man the outer malleolus is formed by the fibula, the inner by the tibia; and each forms a sort of pulley or trochlea around which wind the tendons of important extensor muscles of the foot. The malleoli are little distinguished in most animals, owing to the different set of the foot upon the leg, or the different configuration of the parts. When, as often occurs, the fibula does not reach the ankle, the outer malleolus is wanting unless formed by the tibia. In birds the condyles of the tibia, constituted by ankylosis of proximal tarsal bones, take the name and place of malleoli.
    • n malleolus In botany, a layer; a shoot bent into the ground and half divided at the bend, whence it emits roots.
    • n malleolus [capitalized] In conch., a genus of bivalve shells.
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Chambers's Twentieth Century Dictionary
    • n Malleolus ma-lē′ō-lus a bony protuberance on either side of the ankle
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Webster's Revised Unabridged Dictionary
L., dim. of malleus, hammer
Chambers's Twentieth Century Dictionary


In literature:

The outer malleolus descends lower than the inner.
"A Practical Physiology" by Albert F. Blaisdell
D. The tibia; d, the inner malleolus.
"Surgical Anatomy" by Joseph Maclise
The lateral malleolus is broken across its base, or, in young subjects, along the epiphysial line.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition." by Alexander Miles
Punctures were on the left ankle, over the outer malleolus.
"On Snake-Poison: its Action and its Antidote" by A. Mueller
The inferior extremity, less thick, is prolonged internally by a prominence which corresponds to the internal malleolus of man.
"Artistic Anatomy of Animals" by Édouard Cuyer
Pain above right external malleolus.
"New, Old, and Forgotten Remedies: Papers by Many Writers" by Various