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.
This is why the thistle also became the symbol of the Scottish chilvalric âOrder of the Thistleâ and the nationâs pride. âNemo Me Impune Lacessitâ (âWho dares meddle with me!) or in a sligthly different version âNo-one attacks me with impunityâ became thus the orderâs motto in reference to the thistle.