| ACI | a needle-like part or structure of a plant or animal or crystal |
|---|---|
| ACI | narrow and long and pointed |
| ACI | related to plants or animals or crystals having aciculae or needle-like parts |
| ACI | a powerful hallucinogenic drug |
| ACI | any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt |
| ACI | (chemistry) containing acid |
| ACI | harsh or corrosive in tone |
| ACI | organic compounds that react with water to form an acid |
| ACI | dye in which the chromophore is part of a negative ion |
| ACI | organic compounds containing the group -COX where X is a halogen atom |
| ACI | someone who takes LSD |
| ACI | a hydrogen atom in an acid that forms a positive ion when the acid dissociates |