1. The phenomenon or property of existing as isomers; the state or condition of being isomeric.
Usage: chemistry; plural form of isomerism
2. Instances or examples of isomerism; different cases or types of isomeric relationships between compounds.
Usage: chemistry; plural usage

Examples

• The chemist studied various isomerisms to understand how molecular structure affects compound properties.
• Different isomerisms of glucose explain why some sugars taste sweeter than others.
• Structural isomerisms occur when atoms are arranged differently within the same molecular formula.
• The textbook chapter covered optical isomerisms and their role in pharmaceutical chemistry.
• Students learned to identify isomerisms by analyzing the spatial arrangement of atoms in molecules.