halcyon

[Rudolph C Troike]

Dale,
        I think the alternating stress rule is responsible for the
tertiary stress on Amazon, etc., which requires an /a/, as /@/ is likely
to occur only under weak stress. <halcyon> is the only one of those you
cite which is an adjective rather than a noun, so it would not surprise me
that the stress pattern might be different (cf. verbs vs adjectives ending
in -ate), as it is for me, since I have weakly-stressed /@n/ in the last
syllable. However, cross-class "infection" does occur, which is evidently
what you are attesting to.

        Rudy

Hoping to see Jesse in Newsweek. (Incidentally, what's FreeSBD?)