SYN: microaerophil (2).
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mi·cro·aero·phil·ic -.ar-ə-'fil-ik, -.er- adj requiring very little free oxygen <\microaerophilic bacteria>
mi·cro·aero·phil·i·cal·ly -i-k(ə-)lē adv
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adj.
describing microorganisms that grow best at very low oxygen concentrations (i.e. below the atmospheric level).
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mi·cro·aero·phil·ic (mi″kro-ārґo-fil″ik) [micro- + aero- + -philic] requiring oxygen for growth but at lower concentration than is present in the atmosphere; said of bacteria.Medical dictionary. 2011.