a. 带酸味的, 尖刻的, 带讽刺意味的

[医] 微酸的

[ adj ]
being sour to the taste
<adj.all>

Acidulous \A*cid"u*lous\, a. [L. 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.