'Subacid' definitions:

Definition of 'subacid'

(from WordNet)
adjective
Slightly sour to the taste

Definition of 'Subacid'

From: GCIDE
  • Subacid \Sub*ac"id\, a. [L. subacidus. See Sub-, Acid.] Moderately acid or sour; as, some plants have subacid juices. -- n. A substance moderately acid. [1913 Webster]