pentamerous

American  

[pen-tam-er-uhs] / pɛnˈtæm ər əs /

adjective

1. consisting of or divided into five parts.

2. Botany. (of flowers) having five members in each whorl.

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pentamerous British  

/ pɛnˈtæmərəs /

adjective

1. consisting of five parts, esp (of flowers) having the petals, sepals, and other parts arranged in groups of five

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Other Word Forms

• pentamerism noun
• pentamery noun

Etymology

Origin of pentamerous

From the New Latin word pentamerus, dating back to 1820–30. See penta-, -merous

Example Sentences

A flower in which the parts are arranged in twos is called dimerous; when the parts of the whorls are three, four or five, the flower is trimerous, tetramerous or pentamerous, respectively.

From Project Gutenberg

In the large tropical genus Croton a pentamerous calyx and corolla are generally present, the stamens are often very numerous, and the female flower has three carpels.

From Project Gutenberg

Thus, in both Lilium lancifolium and L. auratum the writer has frequently met with pentamerous flowers.

From Project Gutenberg

The symmetry which is most commonly met with is trimerous and pentamerous—the former occurring generally among monocotyledons, the latter among dicotyledons.

From Project Gutenberg