Hydrogenation Definition: Hydrogenation is a reduction reaction which results in an addition of hydrogen (usually as H2). If an organic compound is hydrogenated, it becomes more 'saturated'. Hydrogenation has many applications, but most people are familiar with the reaction as the one used to make liquid oils into semi-solid and solid fats.
thistle in American English (ËÎ¸ÉªsÉl ; t hisËÉl) noun. any of various plants (as genera Onopordum, Cirsium, and Cnicus) of the composite family, with prickly leaves and heads of white, purple, pink, or yellow flowers; esp., the Scotch thistle (O. acanthium) with white down and lavender flowers.
Thistle (Cirsium discolor) These wildflowers are members of the Aster family. They have interesting pink or purple flower heads that are composed of several narrow tube-shaped flowers. They grow upright with only one flower head per stem. They are fairly easy to grow and are great for supporting local wildlife; butterflies, bees, hummingbirds, and Goldfinches are just a few that benefit from this wonderful plant. This is the perfect wildflower to include in naturalized areas and prairie gardens.