Definition of Protoxylem

1. Noun. The first xylem to form in a plant. ¹



¹ Source: wiktionary.com

Definition of Protoxylem

1. [n -S]

Protoxylem Pictures

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Lexicographical Neighbors of Protoxylem

prototypical
prototypicality
prototypically
prototyping
protovertebra
protovertebrae
protovertebral
protoxid
protoxide
protoxides
protoxidize
protoxidized
protoxidizes
protoxidizing
protoxids
protoxylem (current term)
protoxylems
protozoa
protozoal
protozoal infection
protozoan
protozoans
protozoic
protozoological
protozoologically
protozoologies
protozoologist
protozoologists
protozoology
protozoon

Literary usage of Protoxylem

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Origin of a Land Flora: A Theory Based Upon the Facts of Alternation by Frederick Orpen Bower (1908)
"The central protoxylem in the stele of the seedling is in a position corresponding to that in the medullated stele of the older stem of Ophioglossum and ..."

2. A Student's Text-book of Botany by Sydney Howard Vines (1896)
"The protoxylem is a structure pf considerable morphological importance, serving as it does to mark the individuality of the xylem-bundle of which it forms ..."

3. Proceedings of the Cambridge Philosophical Society by Cambridge Philosophical Society (1900)
"8, PL vn. shows some of the peripheral protoxylem strands of a ... N the protoxylem strands are farther apart tangentially, and this is the result of the ..."

4. The Encyclopedia Americana: A Library of Universal Knowledge (1919)
"The protoxylem is characterized, generally, by the smaller diameter of its ... The position of the protoxylem in the primary xylem is of great importance. ..."

5. Encyclopaedia Britannica, a Dictionary of Arts, Sciences, Literature and edited by Hugh Chisholm (1910)
"The protoxylem-elements are situated at the extreme inner edge of the secondary wood, and may occur as small groups of narrow, spirally- pitted elements ..."

6. A Student's Text-book of Botany by Sydney Howard Vines (1896)
"130) the protoxylem forms the innermost or central portion of the bundle; the broken circle of protoxylem- ?roups is sometimes specially designated the ..."

7. Report of the Annual Meeting (1900)
"The xylem groups also unite in pairs, the protoxylem elements becoming external as they do so. Thus there are n phloem and n xylem groups in the root stele. ..."

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