Search Result for "hemiacetal": 
Wordnet 3.0

NOUN (1)

1. an organic compound usually formed as an intermediate product in the preparation of acetals from aldehydes or ketones; 



WordNet (r) 3.0 (2006):

hemiacetal
    n 1: an organic compound usually formed as an intermediate
         product in the preparation of acetals from aldehydes or
         ketones