resin

res·in   (rěz'ĭn)    n.   Any of numerous clear to translucent yellow or brown, solid or semisolid, viscous substances of plant origin, such as copal, rosin, and amber, used principally in lacquers, varnishes, inks, adhesives, synthetic plastics, and pharmaceuticals. Any of numerous physically similar polymerized synthetics or chemically modified natural resins including thermoplastic materials such as polyvinyl, polystyrene, and polyethylene and thermosetting materials such as polyesters, epoxies, and silicones that are used with fillers, stabilizers, pigments, and other components to form plastics. tr.v.   res·ined, res·in·ing, res·ines To treat or rub with resin. [Middle English, from Old French resine, from Latin rēsīna, from Greek dialectal *rhēsīnā, variant of Greek rhētīnē.] res'in·ous (rěz'ə-nəs) adj.

resin 

Main Entry: res·in
Pronunciation: 'rez-^&n
Function: noun
1 a : any of various solid or semisolid amorphous fusible flammablenatural organic substances that are usually transparent or translucent and yellowish to brown, are formed especially in plant secretions, are soluble in organic solvents (as ether) but not in water,and are electrical nonconductors b : ROSIN c : a solid pharmaceutical preparation consistingchiefly of the resinous principles of a drug or drugs usually extracted by solvents <resin of jalap>
2 a : any of a large class of synthetic products that have some ofthe physical properties of natural resins but are different chemically and are used chiefly in plastics b : any of various products made from a natural resin or a natural polymer

resin res·in (rěz'ĭn)
n.

1. Any of numerous clear to translucent yellow or brown, solid or semisolid, viscous substances of plant origin, such as copal, rosin, and amber.

2. Any of numerous physically similar polymerized synthetics or chemically modified natural resins including thermoplastic materials and thermosetting materials.

3. Rosin.

4. A precipitate formed by the addition of water to certain tinctures.