Dimorphism
- Pronunciation
- /dy-MOR-fiz-um/
- Category
- Physiology
- Singular
- Dimorphism
- Plural
- Dimorphisms
Definition
The occurrence of two distinct forms of individuals within the same species, often referring to differences in size or appearance between males and females.
Etymology
From Greek 'di-' meaning 'two' and 'morphe' meaning 'form' or 'shape'.
Example
Sexual dimorphism in some spider species leads to females being significantly larger than males.
Synonyms
- Bimorphism
Related Terms
- Sexual dimorphism
- Polymorphism
- Phenotypic variation
Usage Notes
Dimorphism is particularly common in insects and arachnids, often associated with reproductive roles and strategies.