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 There are 8 eleven-letter words containing ERIOD| PERIODICALS | • periodicals n. Plural of periodical. • PERIODICAL n. a periodical publication.
 |  | PERIODICITY | • periodicity n. Recurrence of a woman’s periods; menstruation. • periodicity n. The quality of being periodic; tendency to recur at regular intervals.
 • periodicity n. (Mathematics) The quality of a function with a repeated set of values at regular intervals.
 |  | PERIODISING | • periodising v. Present participle of periodise. • PERIODISE v. to divide into periods, also PERIODIZE.
 |  | PERIODIZING | • periodizing v. Present participle of periodize. • PERIODIZE v. to divide into periods, also PERIODISE.
 |  | PERIODONTAL | • periodontal adj. Surrounding a tooth. • periodontal adj. Relating to the periodontium.
 • periodontal adj. Relating to periodontics.
 |  | PERIODONTIA | • PERIODONTIA n. the branch of dentistry concerned with periodontal diseases. |  | PERIODONTIC | • periodontic adj. Synonym of periodontal. • PERIODONTIC adj. relating to periodontia, the branch of dentistry concerned with periodontal diseases.
 |  | PHOTOPERIOD | • photoperiod n. (Biology) The normal duration of natural daylight experienced by an organism; daylength. • PHOTOPERIOD n. the period during every 24 hours when an organism is exposed to daylight.
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 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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