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rosetting
In botany, this term describes a specific growth habit where leaves emerge from a central point at ground level, creating a compact, circular arrangement. This is often an evolutionary adaptation to protect the plant's core from extreme cold or to efficiently capture moisture and light in harsh environments.
In a medical or histological context, the term is used as a diagnostic marker. It refers to the specific spatial organization of cells into circular clusters resembling a rose, which is a critical indicator for pathologists when identifying specific types of neoplasms, such as neuroblastomas or retinoblastomas.
Meanings
Examples
The plant exhibits a characteristic rosetting pattern during its first year of growth.
Look at the rosetting of these leaves around the base of the stem.
I wonder if this species always starts with rosetting before it bolts.
The biopsy showed clear evidence of Homer Wright rosetting in the tumor cells.
We need to determine if this rosetting is a diagnostic marker for this specific neuroblastoma.
The pathologist noted the presence of pseudorosetting in the tissue sample.
The cellular rosetting observed under the microscope suggests a malignant growth.
Some alpine plants use rosetting to protect their central bud from freezing winds.