
small amount of substances aditional to the major components of wood which give timbers their own colour and odour. Resin is the best known.
Found on
http://www.encyclo.co.uk/local/20935

Substances present in vegetable or animal tissue that can be separated by successive treatment with solvents and recovered by evaporation of the solution. ... (05 Mar 2000) ...
Found on
http://www.encyclo.co.uk/local/20973

Substances such as tannin in wood that are not an integral part of the cellular structure and can be removed in solution by solvents, such hot or cold water, that do not react chemically with wood substances
Found on
http://www.encyclo.co.uk/local/21113

Type: Term Pronunciation: eks-trak′tivz Definitions: 1. Substances present in vegetable or animal tissue that can be separated by successive treatment with solvents and recovered by evaporation of the solution.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=31153
No exact match found.