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View definitions for facultative

facultative

adjective as in optional

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Example Sentences

Similarly the saphrophytes are classed as obligatory saphrophytes and facultative parasites.

If a parasite cannot exist outside animal tissues, it is an obligatory parasite; if it can, it is a facultative saphrophyte.

I have seen this particularly in those cases where facultative divergence also was greater than usual.

Moreover, the extent of the "facultative" divergence attainable by prisms shows a considerable latitude.

(b) Both saprophytic and facultative parasitic bacteria agree in requiring non-concentrated food.

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On this page you'll find 12 synonyms, antonyms, and words related to facultative, such as: discretional, discretionary, elective, noncompulsory, nonobligatory, and not required.

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

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