Necessary

NECESSARY

-adj.

1. needed to achieve a certain desired effect or result; required

2. resulting from necessity; inevitable

3. logic

a. (of a statement, formula, etc.) true under all interpretations or in all possible circumstances

b. (of a proposition) determined to be true by its meaning, so that its denial would be self-contradictory

c. (of a property) essential, so that without it its subject would not be the entity it is

d. (of an inference) always yielding a true conclusion when its premises are true; valid

e. (of a condition) entailed by the truth of some statement or the obtaining of some state of affairs.

4. (philosophy) (in a non-logical sense) expressing a law of nature (if it is necessary that all As are B, even although it is not contradictory to conceive of an A which is not B, we are licensed to infer that if something were an A it would have to be B)

5. (rare) compelled, as by necessity or law; not free

-noun

6. (informal) the necessary . the money required for a particular purpose

We

All

Rush to

That well known

Necessary stage

Of slightly delayed inference

Gone in a blink then

Forgotten

Again

In

Time