periodoscope
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Periodoscope — Pe ri*od o*scope, n. [Period + scope.] (Med.) A table or other means for calculating the periodical functions of women. Dunglison. [1913 Webster] … The Collaborative International Dictionary of English
periodoscope — pe·ri·od·o·scope … English syllables
-scope — comb. form forming nouns denoting: 1 a device looked at or through (kaleidoscope; telescope). 2 an instrument for observing or showing (gyroscope; oscilloscope). Derivatives: scopic comb. form forming adjectives. Etymology: from or after mod.L… … Useful english dictionary
