This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. The state of being rancid.

n. The quality or state of being rancid; a rancid scent or flavor, as of old oil.

n. The quality of being rancid; a rankly sour or tainted smell and taste, as of old oil.

n. The chief cause of rancidity in fats is hydrolysis of the glycerides, the elements of water being taken up and the free fatty acids and glycerin being formed. The favoring conditions of the change are the presence of moisture and atmospheric oxygen, exposure to light, and contact with albuminoid and mucilaginous impurities.

n. the state of being rancid; having a rancid scent or flavor (as of old cooking oil)

"Some foods, especially those that have a high fat content or those with delicate flavours and aromas, are susceptible to oxidation (attack by air which causes off flavours to develop, known as rancidity)."

decay   

cupidity    illiquidity    liquidity    lividity    lucidity   

off-flavors    vapidity    NV    work-up    photo-oxidation