facultative

[ fak-uhl-tey-tiv ]

/ ˈfæk əlˌteɪ tɪv /

SEE SYNONYMS FOR facultative ON THESAURUS.COM

adjective

conferring a faculty, privilege, permission, or the power of doing or not doing something: a facultative enactment.

left to one's option or choice; optional: The last questions in the examination were facultative.

that may or may not take place; that may or may not assume a specified character.

Biology. having the capacity to live under more than one specific set of environmental conditions, as a plant that can lead either a parasitic or a nonparasitic life or a bacterium that can live with or without air (opposed to obligate).

of or relating to the faculties.

Origin of facultative

From the New Latin word facultātīvus, dating back to 1810–20. See faculty, -ive

OTHER WORDS FROM facultative

fac·ul·ta·tive·ly, adverbnon·fac·ul·ta·tive, adjective

Words nearby facultative

factual, factualism, factum, facture, facula, facultative, facultative anaerobe, facultative apomict, facultative hyperopia, facultative parasite, faculty

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for facultative

In some cantons the referendum is obligatory, in others it is "facultative," or optional.
The Governments of Europe|Frederic Austin Ogg
Other important species will be considered as facultative parasites.
Handbook of Medical Entomology|William Albert Riley
The distinction between facultative arobe and facultative anarobe might be made.
The Fundamentals of Bacteriology|Charles Bradfield Morrey
The great majority of milk bacteria are either obligate or facultative aerobes.
Outlines of Dairy Bacteriology, 8th edition|H. L. Russell

I have seen this particularly in those cases where facultative divergence also was greater than usual.
Schweigger on Squint|C. Schweigger

British Dictionary definitions for facultative

facultative

/ (ˈfækəltətɪv) /

adjective

empowering but not compelling the doing of an act

philosophy that may or may not occur

insurance denoting a form of reinsurance in which the reinsurer has no obligation to accept a particular risk nor the insurer to reinsure, terms and conditions being negotiated for each reinsurance

biology able to exist under more than one set of environmental conditionsa facultative parasite can exist as a parasite or a saprotroph Compare obligate (def. 4)

of or relating to a faculty

Derived forms of facultative

facultatively, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for facultative

facultative

[ făk′əl-tā′tĭv ]

adj.

Capable of functioning under varying environmental conditions. Used of certain organisms, such as bacteria that can live with or without oxygen.

Capable of occurring along various pathways or under various conditions.

Scientific definitions for facultative

facultative

[ făk′əl-tā′tĭv ]

Capable of existing under varying environmental conditions or by assuming various behaviors. Bacteria that are facultative aerobes can live in both aerobic and anaerobic environments. A facultative parasite can live independently of its usual host. Compare obligate.

单词	facultative
释义	facultative [ fak-uhl-tey-tiv ] / ˈfæk əlˌteɪ tɪv / SEE SYNONYMS FOR facultative ON THESAURUS.COM adjective conferring a faculty, privilege, permission, or the power of doing or not doing something: a facultative enactment. left to one's option or choice; optional: The last questions in the examination were facultative. that may or may not take place; that may or may not assume a specified character. Biology. having the capacity to live under more than one specific set of environmental conditions, as a plant that can lead either a parasitic or a nonparasitic life or a bacterium that can live with or without air (opposed to obligate). of or relating to the faculties. Origin of facultative From the New Latin word facultātīvus, dating back to 1810–20. See faculty, -ive OTHER WORDS FROM facultative fac·ul·ta·tive·ly, adverbnon·fac·ul·ta·tive, adjective Words nearby facultative factual, factualism, factum, facture, facula, facultative, facultative anaerobe, facultative apomict, facultative hyperopia, facultative parasite, faculty Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for facultative In some cantons the referendum is obligatory, in others it is "facultative," or optional. The Governments of Europe\|Frederic Austin Ogg Other important species will be considered as facultative parasites. Handbook of Medical Entomology\|William Albert Riley The distinction between facultative arobe and facultative anarobe might be made. The Fundamentals of Bacteriology\|Charles Bradfield Morrey The great majority of milk bacteria are either obligate or facultative aerobes. Outlines of Dairy Bacteriology, 8th edition\|H. L. Russell I have seen this particularly in those cases where facultative divergence also was greater than usual. Schweigger on Squint\|C. Schweigger British Dictionary definitions for facultative facultative / (ˈfækəltətɪv) / adjective empowering but not compelling the doing of an act philosophy that may or may not occur insurance denoting a form of reinsurance in which the reinsurer has no obligation to accept a particular risk nor the insurer to reinsure, terms and conditions being negotiated for each reinsurance biology able to exist under more than one set of environmental conditionsa facultative parasite can exist as a parasite or a saprotroph Compare obligate (def. 4) of or relating to a faculty Derived forms of facultative facultatively, adverb Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Words related to facultative discretionary, elective, volitional, voluntary, discretional, noncompulsory, nonobligatory Medical definitions for facultative facultative [ făk′əl-tā′tĭv ] adj. Capable of functioning under varying environmental conditions. Used of certain organisms, such as bacteria that can live with or without oxygen. Capable of occurring along various pathways or under various conditions. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for facultative facultative [ făk′əl-tā′tĭv ] Capable of existing under varying environmental conditions or by assuming various behaviors. Bacteria that are facultative aerobes can live in both aerobic and anaerobic environments. A facultative parasite can live independently of its usual host. Compare obligate. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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facultative

adjective

Origin of facultative

OTHER WORDS FROM facultative

Words nearby facultative

Example sentences from the Web for facultative

British Dictionary definitions for facultative

adjective

Derived forms of facultative

Words related to facultative

Medical definitions for facultative

adj.

Scientific definitions for facultative