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4 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 in·fec·tious /-ʃəs/
 (a.)有傳染性的,易傳染的

From: DICT.TW English-Chinese Medical Dictionary 英漢醫學字典

 in·fec·tious /ɪnˈfɛkʃəs/ 形容詞
 有傳染性的,侵染性的

From: Webster's Revised Unabridged Dictionary (1913)

 In·fec·tious a.
 1. Having qualities that may infect; communicable or caused by infection; pestilential; epidemic; as, an infectious fever; infectious clothing; infectious water; infectious vices.
    Where the infectious pestilence.   --Shak.
 2. Corrupting, or tending to corrupt or contaminate; vitiating; demoralizing.
    It [the court] is necessary for the polishing of manners . . . but it is infectious even to the best morals to live always in it.   --Dryden.
 3. Law Contaminating with illegality; exposing to seizure and forfeiture.
    Contraband articles are said to be of an infectious nature.   --Kent.
 4. Capable of being easily diffused or spread; sympathetic; readily communicated; as, infectious mirth.
    The laughter was so genuine as to be infectious.   --W. Black.
 Syn: -- See Contagious.
 

From: WordNet (r) 2.0

 infectious
      adj 1: caused by infection or capable of causing infection;
             "viruses and other infective agents"; "a carrier
             remains infective without himself showing signs of the
             disease" [syn: infective]
      2: easily spread; "fear is exceedlingly infectious; children
         catch it from their elders"- Bertrand Russell [ant: noninfectious]
      3: of or relating to infection; "infectious hospital";
         "infectious disease"