- achAny of several species of plants, such as smallage, wild celery, parsley.
- acheTo suffer pain; to be the source of, or be in, pain, especially continued dull pain; to be distressed.
- apioglucosideA glucoside of apiose
- apioseA branched-chain sugar, 3-C-(hydroxymethyl)-D-glycerotetrose, that occurs in parsley and many other plants