Words similar to necessity

Example sentences for: necessity

How can you use “necessity” in a sentence? Here are some example sentences to help you improve your vocabulary:

The necessity of reconstituting pR with some lipid before it is capable of photocycling shows that the presence of lipids facilitates pR in assuming its fully active structure.
In The Psalms , the translator writes in his preface, “I have tried not to substitute without necessity new English phrases for what was old and well-loved, but unity and modernization of language as well as the true meaning of Hebrew have often made changes inevitable.”
The FDA solicited comments on the above information collections including among other information, the necessity of the collection, the accuracy of the estimated burden and ways to enhance the information collection.
But when Clinton outflanked them and Gingrich's ethics problems embarrassed them, even the party's most intransigent ideologues learned the necessity of compromise.
Material necessity is the most obvious.