<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>A type of strong-smelling chemical substance found in some plants, especially trees that have cones. Terpenes are found in essential oils (scented liquid taken from plants).</n0:def-definition><n0:def-source>NCI-GLOSS</n0:def-source></n0:ComplexDefinition><n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>family of linear, cyclic, and bicyclic C(10)H(16) hydrocarbons with methylated double bonds at every 4th position; isoprene dimer; the basic structural unit of vitamins A, E, and K, and cholesterol and other steroids.</n0:def-definition><n0:def-source>CSP2002</n0:def-source></n0:ComplexDefinition>
<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>The class of compound known as terpenes comprise of essential oils, flavours and fragrances. The extraction and synthesis of compounds such as these is the basis for the perfumery industry. They find a variety of uses in the food and pharmaceutical industry as flavour and odour improvers</n0:def-definition><n0:def-source>NCI</n0:def-source></n0:ComplexDefinition>