Acidulous

• (a.) Slightly sour; sub-acid; sourish; as, an acidulous tincture.
Found on http://thinkexist.com/dictionary/meaning/acidulous/

acidulous

(ә-sid´u-lәs) moderately sour.
Found on http://www.encyclo.co.uk/local/21001

Acidulous

A·cid'u·lous adjective [ Latin acidulus , dim. of acidus . See Acid.] Slightly sour; sub-acid; sourish; as, an acidulous tincture. E. Burke. Acidulous mineral waters , such as contain carbonic anhydride.
Found on http://www.encyclo.co.uk/webster/A/20

Acidulous

A clean, pleasant taste describing the slight tanginess of a curd or fresh cheese.
Found on http://www.dairygoodness.ca/cheese/cheese-glossary

Acidulous

A term denoting excessive total acidity. The threshold for acidulousness is undefined, but certainly a wine with a pH less than 3.1 or a titratable acidity more than 0.9% will taste sour and acidulous. The opposite (taste denoting insufficient total acidity) is flat.
Found on http://winemaking.jackkeller.net/glossary.asp

acidulous

acidulous 1. Acid or sour. 2. Slightly sour, sourish, sub-acid; somewhat acidic. 3. Cutting and sharp in speech or tone.
Found on http://www.wordinfo.info/words/index/info/view_unit/2217/

acidulous

sharp or bitter-tasting
Found on http://phrontistery.info/a.html

Acidulous

Very young wine with a high level of acidity.
Found on http://www.hintsandthings.co.uk/livingroom/GlosssaryA.htm
No exact match found