[1] : The Collaborative International Dictionary of English v.0.48

invasive \inva"sive\, a. ll. invasivus: cf. f. invasif. see
   invade.
   1. tending to invade; characterized by invasion; aggressive.
      "invasive war." --hoole.
      1913 webster

   2. med. tending to spread, especially tending to intrude
      into healthy tissue; -- used mostly of tumors. narrower
      terms: malignant pjc
see also:
invade malignant 

[2] : The Collaborative International Dictionary of English v.0.48

malignant \malig"nant\, n.
   1. a man of extreme enmity or evil intentions. --hooker.
      1913 webster

   2. eng. hist. one of the adherents of charles i. or charles
      ii.; -- so called by the opposite party.
      1913 webster

[3] : The Collaborative International Dictionary of English v.0.48

malignant \malig"nant\, a. l. malignans, -antis, p. pr. of
   malignare, malignari, to do or make maliciously. see
   malign, and cf. benignant.
   1. disposed to do harm, inflict suffering, or cause distress;
      actuated by extreme malevolence or enmity; virulently
      inimical; bent on evil; malicious.
      1913 webster

            a malignant and a turbaned turk.      --shak.
      1913 webster

   2. characterized or caused by evil intentions; pernicious.
      "malignant care." --macaulay.
      1913 webster

            some malignant power upon my life.    --shak.
      1913 webster

            something deleterious and malignant as his touch.
                                                  --hawthorne.
      1913 webster

   3. med. tending to produce death; threatening a fatal
      issue; virulent; as, malignant diphtheria.
      1913 webster

   malignant pustule med., a very contagious disease
      produced by infection of subcutaneous tissues with the
      bacterium bacillus anthracis. it is transmitted to man
      from animals and is characterized by the formation, at the
      point of reception of the infection, of a vesicle or
      pustule which first enlarges and then breaks down into an
      unhealthy ulcer. it is marked by profound exhaustion and
      often fatal. the disease in animals is called charbon;
      in man it is called cutaneous anthrax, and formerly was
      sometimes called simply anthrax.
      1913 webster +pjc
see also:
malign benignant malignant pustule bacillus anthracis charbon cutaneous anthrax 
anthrax 

[4] : WordNet (r) 2.0

malignant
     adj 1: dangerous to health; characterized by progressive and
            uncontrolled growth especially of a tumor ant: benign
     2: extremely malevolent or malicious; "the malignant tongues of
        gossipers" syn: malevolent
see also:
benign malevolent 

[5] : Moby Thesaurus II by Grady Ward, 1.0

157 moby thesaurus words for "malignant":
   acrid, allergic, anemic, antagonistic, antipathetic, apoplectic,
   arthritic, atrocious, baleful, baneful, barbaric, barbarous,
   belligerent, bestial, bilious, bitchy, bitter, bloody, brutal,
   brutish, cancerous, catching, caustic, chlorotic, clashing,
   colicky, colliding, communicable, conflicting, consumptive,
   contagious, corroding, corrosive, corrupting, corruptive,
   counterproductive, cussed, damaging, deadly, death-bringing,
   deathful, deathly, deleterious, despiteful, destructive,
   detrimental, devilish, diabolical, disadvantageous, disserviceable,
   distressing, dropsical, dyspeptic, edematous, encephalitic,
   envenomed, epileptic, evil, fatal, feral, ferine, ferocious,
   fiendish, fierce, full of hate, harmful, hateful, hostile, hurtful,
   infectious, infective, inhuman, iniquitous, injurious, internecine,
   invidious, kill-crazy, killing, laryngitic, leprous, lethal,
   luetic, malarial, malefic, maleficent, malevolent, malicious,
   malign, mean, measly, mephitic, merciless, miasmal, miasmatic,
   miasmic, mischievous, mortal, murderous, nasty, nephritic,
   neuralgic, neuritic, noisome, noncivilized, noxious, ominous,
   ornery, palsied, paralytic, pernicious, pestiferous, pestilential,
   phthisic, pitiless, pleuritic, pneumonic, pocky, podagric,
   poisonous, prejudicial, quarrelsome, rachitic, rancorous,
   repugnant, rheumatic, rickety, ruthless, sanguinary, savage,
   scatheful, scorbutic, scrofulous, set against, sore, spiteful,
   tabetic, tabid, tameless, toxic, toxicant, toxiferous, tubercular,
   tuberculous, tumorigenic, tumorous, uncivilized, ungentle, untamed,
   venenate, veneniferous, venenous, venomous, vicious, virulent,
   vitriolic, wicked, wild

Malignant >> M Words
Malignant, definition of term: Malignant
malignant_pag1.html

Malignant Tumor >> M Words
Malignant Tumor, definition of term: Malignant Tumor
malignant+tumor_pag1.html

Malignant Melan >> M Words
Malignant Melan, definition of term: Malignant Melan
malignant+melan_pag1.html

Malignant - Phase 4.0 - Death of the Scene
...... Malignant Antibody, and Malignant Sound Technologies ( affordable ... Malignant Radio - Free MP3 - Featuring rare underground, dark ambient ... ..
http://www.malignantrecords.com/, score=100, date indexed=December 29, 2005, 11:13 pm

Welcome! - Malignant Hyperthermia Association of the United States
..."News from NMSIS (Neuroleptic Malignant Syndrome Information.        ... for malignant hyperthermia, click here. Neuroleptic Malignant Syndrome ... ..
http://www.mhaus.org/, score=96, date indexed=January 20, 2006, 10:15 am

Malignant Self Love - Narcissism Revisited - The BOOKS about Narcissism, ...
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http://samvak.tripod.com/thebook.html, score=92, date indexed=February 2, 2006, 2:50 am

Malignant melanoma information centre : CancerBACUP
...What is malignant melanoma. *What is cancer?. *The skin. *Types of ... malignant melanoma ... ..
http://www.cancerbacup.org.uk/info/melanoma.htm, score=91, date indexed=December 21, 2005, 3:00 am

NMSIS - Neuroleptic Malignant Syndrome Information Service
...... Malignant Syndrome, Serotonin Syndrome, and Malignant Catatonia, ... Welcome to the Neuroleptic Malignant Syndrome Information Service ( ... ..
http://www.nmsis.org/, score=89, date indexed=December 30, 2005, 2:39 pm

Malignant mesothelioma
...Localized malignant mesothelioma Advanced malignant mesothelioma. ... Ball DL, Cruickshank DG: The treatment of malignant mesothelioma of ... ..
http://www.meds.com/pdq/mesothelioma_pro.html, score=89, date indexed=January 20, 2006, 4:57 am

Malignant mesothelioma
...Stages of malignant mesothelioma Once malignant mesothelioma is found ... What is malignant mesothelioma? Malignant mesothelioma, a rare form of ... ..
http://cancerweb.ncl.ac.uk/cancernet/201071.html, score=89, date indexed=January 20, 2006, 8:17 am

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