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Regional drug slang for an inhalant.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.


(pl. medusas, medusae) the jellyfish (medusoid) stage of the COELENTERATE life cycle, usually free-swimming and propelled by pulsations of the bell. Medusae usually reproduce sexually, giving rise to a POLYP stage from which the medusae are produced asexually Medusae form the dominant phase of the life history of members of the class Scyphozoa, but are often absent or of lesser importance in other classes of the phylum.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005


in Greek mythology, a Gorgon who turned men to stone.
caput Medusae - (1) varicose veins radiating from the umbilicus; - (2) dilated ciliary arteries girdling the corneoscleral limbus in rubeosis iridis. Synonym(s): head of Medusa
head of Medusa - Synonym(s): caput Medusae
Medical Eponyms © Farlex 2012
References in periodicals archive ?
Meanwhile, she holds the tribe under the aura of her evil eye, from which dubious magic they attempt to protect themselves with what turns out to be the gesture of the old Christian cross, always occurring in response to her petrifying Medusan gaze.
(19) But what are we to make of Westervelt's equally Medusan manhood?
With its rictus, evocative stone 'chevelure', griffin-topped helmet and Sphinx-like attributes, Rude's 'la Marseillaise' on the facade of the Arc de Triomphe (1833-6) materialized the ambiguities of the Medusan 'reve de pierre' which Baudelaire would subsequently enshrine in a verbal image in 'La Beaute' (1961: 20).
The woman's Medusan hair that is the centerpiece of this description functions as what the earlier passage calls a "serpentine or otherwise bestial emblem" of her fatal nature.
Whereas Beatrice helped Dante overcome 'the Medusan image of a past poetic' (87), Laura and Petrarch confronted the virgin together in order to affirm his identity.
In these occurrences the shield/mirror signifies as it (1) makes captives of those in the audience who identify with the stereotypes, (2) immobilizes and erases the texts of those Medusan feminists with whom these men perceive themselves to be involved in a contest-conquest, and (3) allows the men to engage in exhibitionary narcissism - a perverse pleasure too intense to be imagined (alone).
14 Pym offers an elaborate discussion of audience reception that is unremarkable in itself, but is ripe for psychoanalytic inquiry in the anxious, unwittingly "Medusan" drama its rhetoric betrays, especially, of course, in light of the relevance Freud's "Medusa" has for his theory of fetishism.
The extensive embroidery on the breast is the text's Medusan laughter, chiefly evoked by Pearl as she represents the "rich, voluptuous, Oriental characteristic" of Hester's nature (59) while mocking the law of the fathers and the pusillanimity of her father.
Rates of these biological interactions could provide information to modify physically based estimates such as EVR to create a more realistic model of the physical-biological interactions that ultimately determine medusan foraging rates.
In the section "The Problem of Zenobia," Dill addresses Zenobia's most salient characterizations--as a Medusan or Ophelian figure, as a masochist, as a betrayer of feminist ideals.
Indeed, in the next couplet, the "Doctor she" becomes a witch whose "sole delight" is "[t]o order draughts as black as night"--an unnatural act, as the clangorous iteration of the dental /d/ sounds hints, through which the Medusan physician's "very glance might cast a spell" as she produces her "chill and acrid potions." In violating female nature she has become unsexed: her appearance is "so grim and stern" that no "heart could burn / For one so uninviting"; she no longer displays a normative woman's "gentle sympathy" but eschews "[a]ll female graces"; and, most ominously, "[s]he seems a man in woman's clothes." In its final stanza, titled "Moral," the poem reiterates its distressing message.