"Howard Lester" wrote in
:

I see no one has picked up on my correction of the misspelling:
it's
Trifid, not Trifed.

That's correct, and it's an actual word in English, too. The
American pronunciation is "try-fid" (long i, then short i) with more
emphasis on the first syllable.

- Robert Cook

I'd always said TRIH-fid to myself, but TRY-fid makes more sense if
maybe it refers to a partition into three.

You might sound funny at the ballpark if you yelled, "Look at that! A TRY-
ple play!"