pen·tas | \ˈpentəs\

Definition of pentas 

1 capitalized : a genus of chiefly African herbs or subshrubs (family Rubiaceae) that are grown as ornamentals especially in mild regions or in greenhouses and have opposite leaves, tubular flowers with a hairy throat, and capsular fruit

2 plural pentas : any plant of the genus Pentas

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History and Etymology for pentas

New Latin, irregular from Greek pente five

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to reject or criticize sharply

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