witches'broom
1witches'broom — n. An abnormal brushlike growth of weak, closely clustered shoots or branches on a tree, such as the hackberry, caused by fungi or viruses. * * * …
2witches'-broom — [wich′iz bro͞om′] n. an abnormal growth of closely bunched, slender twigs at the ends of branches of various woody plants, caused by fungi, viruses, etc …
3witches'-broom — | ̷ ̷ ̷ ̷| ̷ ̷ noun or witch broom : an abnormal tufted growth of small branches on a tree or shrub caused by fungi, viruses, mistletoes, insect injury, or physiological disturbances called also hexenbesen, staghead * * * /wich iz broohm , broom… …
4witches'-broom — /wich iz broohm , broom /, n. Plant Pathol. an abnormal, brushlike growth of small thin branches on woody plants, caused esp. by fungi, viruses, and mistletoes. [1865 70] * * * ▪ plant disease symptom of plant disease that occurs as an abnormal… …
5witches'-broom — witch′es broom n. ppa an abnormal, brushlike growth of small, thin branches on woody plants, caused esp. by fungi and viruses • Etymology: 1865–70 …
6witches' broom — /ˈwɪtʃəz brum/ (say wichuhz broohm) noun a dense mass of small thin branches frequently emerging from a swelling on a tree branch, as on cherry (caused by fungus of the genus Taphrina) and on conifers (caused by various mistletoes). Also, witches …
7witches' broom — noun an abnormal tufted growth of small branches on a tree or shrub caused by fungi or insects or other physiological disturbance • Syn: ↑witch broom, ↑hexenbesen, ↑staghead • Hypernyms: ↑tuft, ↑tussock …
8witches'-broom — noun Date: 1881 an abnormal tufted growth of small branches on a tree or shrub caused especially by parasitic organisms (as fungi, viruses, or aphids) …
9witches' broom — noun dense twiggy growth in a tree caused by infection with fungus (especially rusts), mites, or viruses …
10Lilac witches’-broom — (LWB) is a disease of lilacs caused by the Phytoplasma Candidatus Phytoplasma fraxini . This phytoplasma was first identified as the causal agent of Ash Yellows and has since been attributed to both diseases.Symptoms of the LWB phytoplasma… …
