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There are 10 twelve-letter words containing RIOD
| ANTIPERIODIC | • antiperiodic adj. (Medicine) preventing the regular recurrence of symptoms. • antiperiodic adj. (Mathematics) Exhibiting antiperiodicity. • antiperiodic n. (Medicine) A drug that prevents the regular recurrence of symptoms. |
| APERIODICITY | • aperiodicity n. The condition of being aperiodic. • APERIODICITY n. the state of being aperiodic. |
| LIRIODENDRON | • liriodendron n. Any of several large North American trees, of the genus Liriodendron, that have tulip-like flowers;… • Liriodendron prop.n. A taxonomic genus within the family Magnoliaceae – the two species of tulip tree. • LIRIODENDRON n. the tulip tree. |
| METAPERIODIC | • METAPERIODIC adj. as in metaperiodic acid. |
| PARAPERIODIC | • PARAPERIODIC adj. as in paraperiodic acid. |
| PERIODICALLY | • periodically adv. In a manner that is regular or periodic. • periodically adv. Intermittently or recurrently. • PERIODICAL adv. periodic. |
| PERIODONTIAS | • PERIODONTIA n. the branch of dentistry concerned with periodontal diseases. |
| PERIODONTICS | • periodontics n. (Dentistry) The study of supporting structures of teeth—gums, alveolar bone, cementum, and the periodontal… • PERIODONTICS n. the study of gums, as a branch of dentistry. |
| PERIODONTIST | • periodontist n. A dentist whose speciality is periodontics. • PERIODONTIST n. a dentist specialising in periodontics. |
| PHOTOPERIODS | • photoperiods n. Plural of photoperiod. • PHOTOPERIOD n. the period during every 24 hours when an organism is exposed to daylight. |
Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.
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See this list for:
- English Wiktionary: 40 words
- Scrabble in French: 4 words
- Scrabble in Spanish: 21 words
- Scrabble in Italian: 32 words
- Scrabble in German: no word
- Scrabble in Romanian: 24 words
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