Medical term:
facultatively
facultative
[fak´ul-ta″tiv]not obligatory; pertaining to or characterized by the ability to adjust to particular circumstances or to assume a particular role.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
fac·ul·ta·tive
(fak'ŭl-tā'tiv),Able to live under more than one specific set of environmental conditions; possessing an alternative pathway.
Farlex Partner Medical Dictionary © Farlex 2012
facultative
(făk′əl-tā′tĭv)adj.
1. Of or relating to a mental faculty.
2. Biology Capable of functioning under varying environmental conditions. Used of certain organisms, such as bacteria that can live with or without oxygen.
fac′ul·ta′tive·ly adv.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
fac·ul·ta·tive
(fak'ŭl-tā'tiv)In biology, able to live under more than one specific set of environmental conditions; possessing an alternative pathway.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
facultative
1. Capable of adapting in response to changing environments. Used especially of micro-organisms that can grow either in an atmosphere of oxygen (aerobic) or in the absence of oxygen (anaerobic) or of those capable of living either as parasites or non-parasites.
2. Of organisms with a usual or preferred metabolic process, but which are capable, under unusual conditions, of adopting an alternative metabolic pathway.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
facultative
(of an organism) being capable of adopting an alternative life style from the normal one. In this context, the word ‘facultative’ is followed by the unusual life style. Thus, a facultative PARASITE is one that is normally saprophytic but is occasionally parasitic; a facultative SAPROPHYTE is one that is normally parasitic but can become saprophytic; a facultative ANAEROBE is an organism such as yeast, that is normally aerobic but can exist in anaerobic conditions. Compare OBLIGATE.Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
fac·ul·ta·tive
(fak'ŭl-tā'tiv)Able to live under more than one specific set of environmental conditions; possessing an alternative pathway.
Medical Dictionary for the Dental Professions © Farlex 2012
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