mask

1. Any of a variety of disease states producing alteration or discoloration of the skin of the face. 2. The expressionless appearance seen in certain diseases; e.g., Parkinson facies. 3. A facial bandage. 4. A shield designed to cover the mouth and nose for maintenance of antiseptic conditions. 5. A device designed to cover the mouth and nose for administration of inhalation anesthetics, oxygen, or other gases.
- ecchymotic m. a dusky discoloration of the head and neck occurring when the trunk has been subjected to sudden and extreme compression, as in traumatic asphyxia.
- Hutchinson m. the sensation experienced in tabetic neurosyphilis as if the face were covered with a m. or with cobwebs.
- laryngeal m. a tubular oropharyngeal airway with an inflatable rim at the distal end that when inflated creates an airtight seal immediately above the larynx.
- nonrebreathing m. a m. fitted with both an inhalation valve and an exhalation valve so that all exhaled gas is vented to the external atmosphere and inhaled gas comes only from a reservoir connected to the m..
- tropical m. SYN: chloasma bronzinum.
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Medical Anatomy Segmentation Kit

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mask 'mask n
1) a protective covering for the face
2 a) any of various devices that cover the mouth and nose and are used to prevent inhalation of dangerous substances, to facilitate delivery of a gas (as oxygen or a general anesthetic), or to prevent the dispersal of exhaled infective material see gas mask, oxygen mask
3) a cosmetic preparation for the skin of the face that produces a tightening effect as it dries
mask vt
1) to prevent (an atom or group of atoms) from showing its ordinary reactions <to \mask hydroxyl in a sugar by converting it into methoxyl>
2) to modify or reduce the effect or activity of (as a process or a reaction)
3) to make indistinct or imperceptible <flavorings used in pharmacy to \mask the taste of medications>
4) to raise the audibility threshold of (a sound) by the simultaneous presentation of another sound

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(mask) 1. a covering for the face, such as a bandage, an apparatus for administering oxygen, or a cloth for prevention of spread of droplets from the nose and mouth. 2. to cover or conceal the true nature of something, such as of a disorder by unrelated symptoms. See masked. 3. to interfere with processing of a stimulus; see masking. 4. in dentistry, to camouflage metal parts of a prosthesis by covering with opaque material.

Medical dictionary. 2011.

Synonyms:

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  • Mask — (m[.a]sk), n. [F. masque, LL. masca, mascha, mascus; cf. Sp. & Pg. m[ a]scara, It. maschera; all fr. Ar. maskharat buffoon, fool, pleasantry, anything ridiculous or mirthful, fr. sakhira to ridicule, to laugh at. Cf. {Masque}, {Masquerade}.] 1. A …   The Collaborative International Dictionary of English

  • mask — [mask, mäsk] n. [Fr masque < It maschera, mascara, a mask, prob. < Ar maskhara, a clown, buffoonery] 1. a covering for the face or part of the face, to conceal the identity 2. anything that conceals or disguises 3. a party, carnival, etc.… …   English World dictionary

  • Mask (RO) — Mask (Royaumes oubliés) Mask est une divinité imaginaire fictive propre aux Royaumes oubliés, un monde de campagne pour le jeu de rôle Donjons Dragons. Mask est le Dieu des voleurs et des espions. Sa tâche consiste donc à aider les voleurs dans… …   Wikipédia en Français

  • mask — /mask / (say mahsk) noun 1. a covering for the face, especially one worn for disguise; a false face. 2. a piece of cloth, silk, or plastic material, covering the face of an actor, to symbolise the character represented, used in Greek and Roman… …   Australian English dictionary

  • Mask — Mask, v. t. [imp. & p. p. {Masked}; p. pr. & vb. n. {Masking}.] 1. To cover, as the face, by way of concealment or defense against injury; to conceal with a mask or visor. [1913 Webster] They must all be masked and vizarded. Shak. [1913 Webster]… …   The Collaborative International Dictionary of English

  • Mask — De izquierda a derecha: Andres Franco, Javier Barragan, Jose Fors, Ernesto Franco y Arturo Ybarra Datos generales Origen Guadalajara, Jalisco, México …   Wikipedia Español

  • Mask — Mask, v. i. 1. To take part as a masker in a masquerade. Cavendish. [1913 Webster] 2. To wear a mask; to be disguised in any way. Shak. [1913 Webster] …   The Collaborative International Dictionary of English

  • Mask — bezeichnet: M.A.S.K., Zeichentrickserie Lough Mask, See im County Mayo, Irland Siehe auch: Die Maske Diese Seite ist eine Begriffsklärung zur Unterscheidung mehrerer mit d …   Deutsch Wikipedia

  • Mask — (Lough M.), See in den irischen Grafschaften Mayo und Galway, 16 km lang und 3–7 km breit, entsendet einen Abfluß nach S. zum Lough Corrib. An der Südostküste Ruinen von Mask Castle (aus dem 13. Jahrh.) …   Meyers Großes Konversations-Lexikon

  • mask# — mask n portrait, photograph, *image, effigy, statue, icon mask vb *disguise, cloak, dissemble, camouflage Analogous words: conceal, *hide, secrete, screen: protect, shield, *defend, guard, safeguard Contrasted words: discover, divulge, disclose,… …   New Dictionary of Synonyms

  • mask — [n] false face, cover affectation, air*, appearance, aspect, beard*, blind, camouflage, cloak*, concealment, cover up, disguise, disguisement, dissembling, dissimulation, domino*, facade, fig leaf*, front, guise, hood, masquerade, pose, posture,… …   New thesaurus

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