pneumatode

From Wiktionary, the free dictionary
Archived revision by Chuck Entz (talk | contribs) as of 01:19, 10 August 2024.
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

English

[edit]

Etymology

[edit]

From Ancient Greek πνεῦμα (pneûma) (breath) and ὁδός (hodós) (pathway)[1]

Noun

[edit]

pneumatode (plural pneumatodes)

  1. (botany, histology) A group of cells with spiral secondary wall thickenings, present in a velamen; acts as an airway for gas exchange for respiration or photosynthesis
  2. (botany, histology) A group of cells presumed to be specialised as an airway for ventilation of particular tissues.
    • 2015, R. H. V. Corley, P. B. H. Tinker, The Oil Palm, Wiley, →ISBN, page 144:
      The roots of palms are characterised by pneumatodes on both underground and aerial roots. These have been supposed to ventilate the underground roots, but direct physiological evidence for this is lacking.

References

[edit]
  1. ^ Jaeger, Edmund Carroll. A source-book of biological names and terms. Publisher=Thomas, Springfield, Ill 1959. isbn=0-398-06179-3
Retrieved from "https://en.wiktionary.org/w/index.php?title=pneumatode&oldid=80993124"