protostele
Botany
noun
A type of stele typical of primitive plants (still found in, e.g., the seedling stages of many ferns) that lacks pith and consists of a solid core of xylem surrounded by a cylinder of phloem.
Origin
Early 20th century.
- safety valve
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- safflower
- safflower oil
- saffron
- saffron crocus
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- palaeornithological
- palaeornithology
- palaeosalinity
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- Palaeo-Siberian
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- palaeospecies