Definition of geometric isomerism in US English:

geometric isomerism

(also geometrical isomerism)


  • See geometric isomer

    • ‘If there are two different attachments on each side of the double bond then geometrical isomerism results.’
    • ‘Due to geometrical isomerism, two forms of polyethyne are produced: cis-polyethyne and trans-polyethyne.’
    • ‘Most cases of geometric isomerism are a result of molecule rigidity which prevents rotation about a double bond.’
    • ‘An interesting example of geometric isomerism caused by rings is found in sugars such as glucose, fructose, mannose and galactose.’
    • ‘It was shown that in these ionized stereoisomers an effect due to geometrical isomerism appears in two different ways.’