Rosin
Rosin
Rosin (pronounced /ˈrɒzɪn/), also known as colophony or Greek pitch, is a solid form of resin obtained from pines and some other plants, mostly conifers, produced by heating fresh liquid resin to vaporize the volatile liquid terpene components.
Etymology
The term "rosin" originates from the Latin word resina, meaning "resin". It was adopted in English in the 14th century, with the spelling "rosyn" until the 17th century when it was modernized to "rosin".
Uses
Rosin is used for a variety of applications ranging from string instrument bows to gymnastics grips, from sealing wax and glue to soap and paper sizing. In medicine, rosin is used as an ingredient in plasters (bandages) and in a certain type of pill coating.
Medical Uses
In the medical field, rosin is used in bandages to add stickiness and give them a longer-lasting adhesive effect. It is also used in pill coatings to make them easier to swallow and to protect the pill ingredients from stomach acids.
Related Terms
- Resin: A solid or highly viscous substance of plant or synthetic origin.
- Terpene: A large and diverse class of organic compounds, produced by a variety of plants, particularly conifers.
- Colophony: Another name for rosin, derived from colophonia resina, Latin for 'resin from Colophon' an ancient Ionic city.
- Pine: A type of coniferous tree which produces the resin from which rosin is derived.
External links
- Medical encyclopedia article on Rosin
- Wikipedia's article - Rosin
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