The Collaborative International Dictionary
Turion \Tu"ri*on\, n. (Bot.) Same as Turio.
Wiktionary
n. (context botany English) A bud, produced by some aquatic plants, that becomes detached and dormant until the following spring
Wikipedia
A turion (from Latin turio meaning "shoot") is a type of bud that is capable of growing into a complete plant. A turion may be an underground bud.
Some aquatic plant species produce overwintering turions, especially in the genera Potamogeton, Myriophyllum, Aldrovanda and Utricularia. These plants produce turions in response to unfavourable conditions such as decreasing day-length or reducing temperature. They are derived from modified shoot apices and are often rich in starch and sugars enabling them to act as storage organs. Although they are hardy ( frost resistant), it is probable that their principal adaptation is their ability to sink to the bottom of a pond or lake when the water freezes. Because water expands anomalously at lower temperatures, water at is denser than colder water and stays at the bottom, and in this water turions over-winter before rising again in the spring. Some turions or aquatic plants also exhibit drought resistance allowing them to survive in temporary pools.
Turion may refer to:
- Turion (botany), winter bud in aquatic species
- AMD Turion, family of AMD 64-bit processors
Usage examples of "turion".
Father Pryke had said in his excitable manner, was the cen- turion beneath the cross and, when the spear struck the dolorous blow, he raised the dish to catch the blood!