The thing that came to my mind right away was Optic Neuritis, as I had this condition last year in both eyes. If your eyes hurt when your moving them go and see your local eye Dr and they will be able to confirm this, by having a look at the back of your eye, and it will be obvious if it is Optic Neuritis.
â¢ TREE TRUNK (noun) The noun TREE TRUNK has 1 sense: 1. the main stem of a tree; usually covered with bark; the bole is usually the part that is commercially useful for lumber. Familiarity information: TREE TRUNK used as a noun is very rare. Dictionary entry details. â¢ TREE TRUNK (noun)
Terminology of phylogenetic trees. This is a bifurcating tree. The vertical lines, called branches, represent a lineage, and nodes are where they diverge, representing a speciation event from a common ancestor. The trunk at the base of the tree, is actually called the root. The root node represents the most recent common ancestor of all of the taxa represented on the tree. Time is also represented, proceeding from the oldest at the bottom to the most recent at the top. What this particular tree tells us is that taxon A and taxon B are more closely related to each other than either taxon is to taxon C.