1Having parts arranged in groups of four.
- ‘The perianth of Calceolariaceae is shown to be derived from a tetramerous condition, not from pentamery as traditionally believed.’
- ‘The genus is characterized by tetramerous flowers with bithecal anthers, lack of pseudostaminodia, a capitate or poorly defined stigma, and pollen of the Amaranthus type.’
- ‘The proximal aulacophore is polymerous, rather than tetramerous (as in most other stylophorans) and superficially similar to that of the earliest stylophoran, Ceratocystis.’
- ‘The stele is divided into three parts, the tetramerous proxistele closest to the theca tapering through the mesistele to the dimerous dististele furthest from the theca.’
- ‘The species are distinguished from most other tetramerous beetles, by the thickened hinder thighs, by which they are enabled to leap to a considerable height into the air.’
- 1.1Consisting of four joints or parts.
- ‘They usually have umbrella-shaped bodies and tetramerous (four-part) symmetry.’