(used of decomposing oils or fats) having a rank smell or taste usually due to a chemical change or decomposition
<adj.all> rancid butter rancid bacon
smelling of fermentation or staleness
<adj.all>
Rancid \Ran"cid\ (r[a^]n"s[i^]d), a. [L. rancidus, fr. rancere to be rancid or rank.] Having a rank smell or taste, from chemical change or decomposition; musty; as, rancid oil or butter.
Mr. Andrews ate rancid mutton fat and drank mare's milk in the Gobi with the best and worst of them.
Whose judgment was it that Kroger's Peanut Butter tasted rancid?
These days the testers are trying to find out exactly how long it takes milk to get rancid and to distinguish between degrees of rancidness.
Before each is a tray with a disposable cup, a glass of water, a paper graph and six amber bottles of rancid milk.
Some of the rancid milk panelists also evaluate microwave-baked cakes as to their air pockets, resistance to cutting, crumbliness and springiness (the degree to which 2 centimeters of cake return to original form 2 seconds after being compressed).