| Actinobacillus equuli | A species causing suppurative lesions, particularly in the kidneys and joints in foals and piglets, and endocarditis in pigs. (05 Mar 2000) |
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| actinobacillus infections | Infections with bacteria of the genus actinobacillus. (12 Dec 1998) |
| Actinobacillus lignieresii | A species producing infections of the upper alimentary tract and mouth in cattle and swine (actinobacillosis) and suppurative lesions in the skin and lungs of sheep; it is the type species of its genus. (05 Mar 2000) |
| actinobacillus pleuropneumoniae | A species of gram-negative, facultatively anaerobic coccobacillus-shaped bacteria that has been isolated from pneumonic lesions and blood. It produces pneumonia with accompanying fibrinous pleuritis in swine. (12 Dec 1998) |
| actinobacteria group | A group of gram-positive, heterogeneous bacteria. This group encompasses a range of morphologically, physiologically, and chemically different organisms and includes bacteria that form cocci, short rods, irregular rods, and mycelia that fragment. (12 Dec 1998) |
| actinodermatitis | An obsolete term for adverse reaction of skin to radiation therapy (ultraviolet, X-ray, or radium); more commonly, radiodermatitis. Synonym: photodermatitis. Origin: actino-+ G. Derma, skin, + -itis, inflammation (05 Mar 2000) |
| actinogram | An obsolete synonym for radiograph. (05 Mar 2000) |
| actinograph | An instrument for measuring and recording the variations in the actinic or chemical force of rays of light. Origin: Gr, ray + -graph. Source: Websters Dictionary (01 Mar 1998) |
| actinohematin | A red respiratory pigment found in certain forms of Actinia (sea anemones). Origin: actino-+ G. Haima, blood (05 Mar 2000) |
| actinoid | Having the form of rays; radiated, as an actinia. Origin: Gr, ray. Source: Websters Dictionary (01 Mar 1998) |
| actinolite | <chemical> A bright green variety of amphibole occurring usually in fibrous or columnar masses. Origin: Gr, ray. Source: Websters Dictionary (01 Mar 1998) |
| actinolitic | <chemical> Of the nature of, or containing, actinolite. Source: Websters Dictionary (01 Mar 1998) |
| actinology | <study> The science which treats of rays of light, especially of the actinic or chemical rays. Origin: Gr, ray. (04 Mar 1998) |
| Actinomadura | A genus of aerobic, Gram-positive, non-acid-fast fungi where filaments fragment into spores. Actinomadura pelletieri is an agent of mycetoma. Origin: actino-+ Madura, India (05 Mar 2000) |
| Actinomadura africana | A species found in a case of mycetoma of the foot in South Africa. (05 Mar 2000) |