mycobacterium

n., pl., -te·ri·a (-tîr'ē-ə).
Any of various slender, rod-shaped, aerobic bacteria of the genus Mycobacterium, which includes the bacteria that cause tuberculosis and leprosy.

mycobacterial my'co·bac·ter'i·al adj.

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(mī'kō-băk-tēr'ē-əm)
n.

Any of various slender rod-shaped aerobic bacteria of the genus Mycobacterium, which includes the bacteria that cause tuberculosis and leprosy.

Emanating from or pertaining to mycobacterium.

• m. granuloma — may be caused by Mycobacterium tuberculosis (see cutaneous tuberculosis), M. lepraemurium (see feline leprosy) or opportunist mycobacteria (see opportunist mycobacterial granuloma, below).
• opportunist m. granuloma — a chronic infection of the skin and subcutaneous tissue, caused by saprophytic mycobacteria, usually as a result of wound contamination. Seen most commonly in cats, particularly in the inguinal region, the lesion may be extensive with ulceration and draining fistulas. Called also pyogranulomatous panniculitis.

  Opportunist mycobacterial granuloma in a dog.

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The noun has one meaning:

Meaning #1: rod-shaped bacteria some saprophytic or causing diseases
  Synonym: mycobacteria

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