ALL meanings of protostele
pro·to·stele
P p - noun protostele the solid stele of most roots, having a central core of xylem enclosed by phloem. 1
- noun protostele a simple type of stele with a central core of xylem surrounded by a cylinder of phloem: occurs in most roots and the stems of ferns, etc 0
- noun protostele a simple, primitive arrangement of conducting tissues in stems and roots of certain lower plants, consisting of a solid cylinder of xylem surrounded by a layer of phloem 0