1. the occurrence of two distinct forms, shapes, or types within a single species or substance
Usage: commonly used in biology and chemistry
2. in biology, the existence of two different forms in the same species, such as differences between males and females
Usage: also called sexual dimorphism when referring to sex-based differences
3. in chemistry, the property of a substance that can crystallize in two different forms
Usage: technical; also called allotropism in some contexts

Examples

• Sexual dimorphism in birds is evident in the bright plumage of males compared to females.
• The dimorphism between worker and soldier ants shows how the same species can develop different body types.
• Carbon exhibits dimorphism, existing as both diamond and graphite in crystalline forms.
• Many fish species display dimorphism, with males being larger or more colorful than females.
• The dimorphism in butterfly wing patterns between males and females helps scientists identify species.
• Dimorphism in plants can be seen when the same species produces two different leaf shapes.
• Researchers study dimorphism to understand how environmental factors influence organism development.