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.
Rust diseases affect a plethora of fruit, nut and ornamental trees and shrubs. Rust is often a problem with roses, but can also attack carnations, sunflowers and other flowering plants. Rust may cause leaf spots or turn the entire leaf yellow or brown. Rust also causes premature leaf drop, curling and withering of foliage.