Re: Antonym of 'evanescent'?

On 18 Dec, 22:04, AES <sieg...@xxxxxxxxxxxx> wrote:
In article <FrW9j.6$oJ4.727...@xxxxxxxxxxxxxxxxxxxx>,
"Coater" <n...@xxxxxxxxxxx> wrote:
"AES" <sieg...@xxxxxxxxxxxx> wrote in message
news:siegman-9752FD.09181318122007@xxxxxxxxxxxxxxxxxxxx
What is -- or should be -- the antonym of 'evanescent' *in optics*?
....
The problem is: _All_ the antonyms of "evanescent" that I know of
(e.g., all of those listed above) are purely _temporal_ in character.

But, the primary use of "evanescent" is optics is purely _spatial_ in
character -- as in "evanescent waves".

[I'm thinking of inventing "antivescent waves" as the spatial antonym of
"evanescent waves" . . . ]

I'm not sure what you want the new word to mean.

The Shorter Oxford has evanescent coming from ex- (out) + vanescere
(vanish, from a word for vain=empty, of no real use).

You could invent something like "invanescent" or (better) use Phil's
"crescent/crescive", but those imply growing, as the opposite of
fading.

If you mean spatially "constant" rather than varying, "avanescent"
would be too confusing and "non-vanescent" is feeble.
I don't have a paper Thesarus handy, and only "constant" and "even"
come to mind.

I suppose "never-vescent"'s out?

Hth

Henry
.

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