From The Collaborative International Dictionary of English v.0.48:
Re \Re\ (r[=a]). [It.] (Mus.)
A syllable applied in solmization to the second tone of the
diatonic scale of C; in the American system, to the second
tone of any diatonic scale.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Re- \Re-\ (r[=e]-). [L. re-, older form (retained before vowels)
red-: cf. F. re-, r['e]-.]
A prefix signifying back, against, again, anew; as, recline,
to lean back; recall, to call back; recede; remove; reclaim,
to call out against; repugn, to fight against; recognition, a
knowing again; rejoin, to join again; reiterate; reassure.
Combinations containing the prefix re- are readily formed,
and are for the most part of obvious signification.
[1913 Webster]
Note: With the increase of electronic connunications, in
which the vowels with a diaeresis (e.g. ["e]) are
seldom used in contrast with printed materials, some
words with re followed by a vowel are now spelled with
a hyphen to indicate that the two vowels are to be
pronounced as two syllables rather than as one
syllable, as in re-emerge rather than re["e]merge. The
unbroken forms (e.g. reemerge) are, however, usually
more commonly used, and the pronunciation with two
syllables for the two vowels is taken as understood.
[PJC]