aecidium

== English == === Alternative forms === æcidium, oecidium === Etymology === From New Latin aecidium, the diminutive form of Ancient Greek αἰκίᾱ (aikíā, “injury”). However Merriam-Webster takes the origin from Ancient Greek οἰκίδιον (oikídion) and refers to the botanist John Hill, in his A General Natural History, or New and Accurate Descriptions of the Animals, Vegetables, and Minerals, of the Different Parts of the World, vol. II, A History of Plants (London: Printed for Thomas Osborne, 1751), p. 64: "We have called this genus, distinguished by its peculiar cells, Æcidium, from the Greek οικιδιον, cellula." Compare also many other fungal spore-related terms in -idium, most coined after this one. === Pronunciation === (Received Pronunciation) IPA(key): /iːˈsɪdɪəm/ === Noun === aecidium (plural aecidia or aecidiums) The cupulate fruiting body borne upon the mycelium of certain fungi commonly parasitic upon specimens of the Compositae, Lamiaceae, Leguminosae, and Ranunculaceae families (mycology) A member of the form genus Aecidium. ==== Related terms ==== ==== Translations ==== ==== See also ==== teliospore urediniospore ==== References ====