Origin of facultative
OTHER WORDS FROM facultativefac·ul·ta·tive·ly, adverbnon·fac·ul·ta·tive, adjective
Words nearby facultative
How to use facultative in a sentence
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.The Elements of Bacteriological Technique|John William Henry Eyre