first-year of growth (actual diameter of about 3 mm). rows of large pink cells in the centre - these are the xylem cells that make-up the wood. the xylem is the bark (stem cortex) and inside the xylem is the pith (stem medulla). traversed by rays of parenchyma cells, like radial spokes (stained green).
verity noun. âº [U] the âquality of being âtrue: In the âfilm, he âplays a âspy whose âmission is to âconfirm the verity of a âsecret âmilitary âdocument. âº [C] a âbelief, âidea, or âprinciple that is âgenerally âaccepted as being âtrue: She has âspent her âlife in a âsearch for âeternal/âscientific/âuniversal verities.
The quadrivium (plural: quadrivia) are the four subjects, or arts, taught after teaching the trivium. The word is Latin, meaning the four ways (or a place where four roads meet), and its use for the four subjects has been attributed to Boethius or Cassiodorus in the 6th century.