Medical Definition of NEOLOGISM. 1. : a new word, usage, or expression. 2. : a word coined by a psychotic that is meaningless except to the coiner.ull Definition of NEOLOGISM. 1. : a new word, usage, or expression. 2. psychology: a new word that is coined especially by a person affected with schizophrenia and is meaningless except to the coiner. â neÂ·olÂ·oÂ·gisÂ·tic \-Ëae-ËÃ¤-lÉ-Ëjis\ tik. adjective
What is black spot? Black spot is the most serious disease of roses. It is caused by a fungus, Diplocarpon rosae, which infects the leaves and greatly reduces plant vigour. Expect to see leaf markings from spring, which will persist as long as the leaves remain on the plant. The fungus is genetically very diverse and new strains arise rapidly.
Itâs not difficult to recognize blackspot, (Diplocarpon rosae). The fungus initially reveals itself as tiny black spots on foliage. In very short order, the black spots become surrounded by yellow halos. These are not halos of the angelic sort, but the kind that indicate your rose is in trouble. The infected leaves will eventually turn a sickening shade of yellow and then drop to the ground. And, if left untreated, the fungus will continue to attack other leaves on the shrub (young leaves are the most vulnerable).