half-long

half-long (not comparable)

1. Between a short vowel and a long vowel in length.
   • 1877, Henry Sweet, A Handbook of Phonetics, volume 2, page 60:

     In French most vowels are half-long, and are only occasionally lengthened or shortened into full longs and shorts.

half-long (plural half-longs)

1. A vowel that is between a short vowel and a long vowel in length.

   Synonym: half-long vowel