English word diol comes from English -ol, English di-
| Dictionary entry | Language | Definition |
|---|---|---|
| -ol | English (eng) | (organic chemistry) An alcohol or phenol. Indicating an oily substance. |
| di- | English (eng) | (uncommon) Alternative form of dis-. Two, twice, or double A form of dia- before a vowel. |
| diol | English (eng) | (organic compound) any organic compound having two hydroxy functional groups. |