Definitions for rubia

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Princeton's WordNet

  1. Rubia, genus Rubia(noun)

    type genus of the Rubiaceae; Old World herbs and subshrubs grown for their medicinal properties and for dye substances extracted from their roots

Freebase

  1. Rubia

    Rubia is a genus of the madder family Rubiaceae, which contains about 80 species of perennial scrambling or climbing herbs and sub-shrubs native to the Old World, Africa, temperate Asia and America. The genus and its best known species are also known as Madder, Rubia tinctorum, Rubia peregrina, and Rubia cordifolia. The Common Madder can grow up to 1.5 m in height. The evergreen leaves are approximately 5–10 cm long and 2–3 cm broad, produced in whorls of 4–7 starlike around the central stem. It climbs with tiny hooks at the leaves and stems. The flowers are small, with five pale yellow petals, in dense racemes, and appear from June to August, followed by small red to black berries. The roots can be over a metre long, up to 12 mm thick and the source of red dyes known as rose madder and Turkey red. It prefers loamy soils with a constant level of moisture. Madders are used as food plants for the larvae of some Lepidoptera species including the Hummingbird Hawk Moth.

U.S. National Library of Medicine

  1. Rubia

    A plant genus of the family RUBIACEAE. The root is a source of red dyes (madder color and 1,2,4-trihydroxy-9,10-anthracenedione) and ANTHRAQUINONES.


Translations for rubia

Kernerman English Multilingual Dictionary

blonde(noun)

a woman with light-coloured hair.

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