macrocyclicadj.
/ˌmakrə(ʊ)ˈsʌɪklɪk/, U.S. /ˈˌmækroʊˈsaɪklɪk/ 1. Botany. Of a rust fungus: having a life cycle characterized by production of all five of the possible spore types, or more spore types than teliospores and basidiospores.
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the world > life > biology > biological processes > development, growth, or degeneration > [adjective] > phase or type of life cycle
retrograde1850
photophobe1897
heterogonic1926
homogonic1926
macrocyclic1926
scotophil1949
scotophilic1960
the world > plants > particular plants > plants perceived as weeds or harmful plants > poisonous or harmful plants > harmful or parasitic fungi > [adjective] > having a particular life-cycle (of rust-fungus)
short-cycle1915
macrocyclic1926
1926 Arthur & Kern in Mycologia 18 90 The vegetative body is either long-cycle (macrocyclic), consisting of two unlike and discontinuous generations, or short-cycle (microcyclic), consisting of one continuous generation.
1926 Arthur & Kern in Mycologia 18 91 We are indebted to Dr. G. Lagerheim, of Stockholm, for the suggestion of the terms macrocyclic and microcyclic which seem to us to be very appropriate and satisfactory.
1950 E. A. Bessey Morphol. & Taxon. Fungi xii. 396 Rusts possessing such a cycle are called macrocyclic or long-cycle rusts.
1970 J. Webster Introd. Fungi 376 It is also believed that forms with shorter life cycles arose..from macrocyclic ancestors.
1984 D. A. Roberts & C. W. Boothroyd Fund. Plant Pathol. (ed. 2) xxviii. 341 Many rust fungi produce all of the five spore stages..and are termed long-cycle (macrocyclic) rusts.
2. Chemistry. Containing or designating a ring composed of a relatively large number of atoms.
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the world > matter > chemistry > atomic chemistry > [adjective] > relating to molecules > macrocyclic
macrocyclic1933
1933 J. W. Hill & W. H. Carothers in Jrnl. Amer. Chem. Soc. 55 5023 Macrocyclic compounds are rings of more than seven atoms.
1947 R. L. Wakeman Chem. Commercial Plastics xi. 225 Macrocyclic esters can thus be formed, containing even as many as 16 or more members in the ring.
1964 M. Hynes Med. Bacteriol. (ed. 8) x. 137 These substances, as well as erythromycin, have a macrocyclic lactose ring, and are sometimes termed macrolides.
1992 Analyt. Chem. 64 206/1 The first test compound chosen was desertomycin.., a macrocyclic antibiotic carrying 19 exchangeable hydrogens.
This entry has been updated (OED Third Edition, March 2000; most recently modified version published online March 2022).
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adj.1926