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.
The first signs of this fungus are pinhead-sized black dots on rose leaves and/or black spots on the canes. As the black spots grow, they are surrounded by a yellow halo of dying leaf tissue. You should check your roses often, a couple of times a week for sure, so you can take action before the disease advances.lack Spot On Roses. This rose fungus disease is easy to detect and it doesn't take much time to defeat. Black spot spores travel in the air or on surfaces that brush infected leaves. Spores can also spread via water spray, such as overhead sprinklers.