| -diol | 1. Suffix form of the prefix dihydroxy. 2. A member of a class of compounds containing two hydroxyl groups. (05 Mar 2000) |
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| -dymus | 1. Suffix to be combined with number roots; e.g., didymus, tridymus, tetradymus. 2. Occasionally used shortened form for -didymus. Origin: G. -dymos, fold (05 Mar 2000) |