microformn.

Brit.

/ˈmʌɪkrə(ʊ)fɔːm/, U.S.

/ˈmaɪkroʊˌfɔrm/,

/ˈmaɪkrəˌfɔrm/

Origin: Formed within English, by compounding. Etymons: micro- comb. form, form n.

Etymology: < micro- comb. form + form n. In sense 1 apparently after the systematic use in mycology of Micro- in scientific Latin subgenus or section names, e.g. Micropuccinia (J. Schröter 1869, in Abhandl. der Schlesischen Ges.: Naturwissensch. u. Med. 20).

1. Mycology. A microcyclic rust fungus, spec. one that has teliospores that germinate after a resting period. Now rare.In N.E.D. this sense was treated as adjectival, perhaps because of the ambiguous wording of quot. 1900.

ΘΚΠ

the world > plants > particular plants > plants perceived as weeds or harmful plants > poisonous or harmful plants > harmful or parasitic fungi > [noun] > causing disease in plants > rust-fungus

uredines1753

rust1801

uredo1836

rust fungus1841

mercury rust1864

uredo stage1880

uredine1889

microform1900

red-heart1907

1900 B. D. Jackson Gloss. Bot. Terms 159/1 Microform, used of a heteroecious Fungus with teleutospores only, which germinate only after a resting period.

1904 Ann. Bot. 18 361 The view of Dietel, that the lepto- and micro-forms which possess only teleutospores are the most primitive.

1912 Bull. Torrey Bot. Club 39 117 The more complex types were derived from the simpler lepto- and microforms by a progressive development of the sporophyte.

1927 Bot. Gaz. 84 114 The short-cycle lepto-form or micro-form, which normally inhabits the aecial host.

1946 Bull. Torrey Bot. Club 73 349 Large numbers of pycnia were associated with the telia, indicating that the rust is definitely a micro-form.

2. A microscopic, small, or minor form (of an organism, artefact, etc.).

ΚΠ

1909 Cent. Dict. Suppl. Micro-form, a microscopic organism, or one that is too small to be studied without a microscope.

1920 New Phytologist 19 169 The micro-forms of the genus [Rosa].

1934 Jrnl. Anthropol. Inst. 64 86 (table) Concave-scaled... Obl. sp. (‘Tardenoisian’ is a micro-form).

1937 Jrnl. Ecol. 25 10 For our present purpose we shall be dealing mainly with well-defined species or subspecies, the large number of micro-forms of ‘critical’ genera such as Rubus, Rosa, Hieracium, Taraxacum and Euphrasia being omitted.

1948 Jrnl. Ecol. 36 324 Her project is to publish a series of some 1500-1800 black and white plates, each giving a series of illustrations of a single species of plant... From the plan at this stage are excluded microforms, critical species, varieties, casuals, and escapes from cultivation.

1968 R. W. Fairbridge Encycl. Geomorphol. 1051/1 Rimstone dams greater than 40 feet in height are known while micro-forms only a few millimetres high abound on stalagmites and flowstone.

1973 Nature 16 Mar. 190/1 Sosman has classified the microforms of silica into microcrystalline, [etc.].

1990 Jrnl. Semitic Stud. 35 323 The literature consists basically of a mass of small units (which he calls ‘microforms’) which only very late on crystallized out into ill-defined ‘macroforms’.

3. Any microphotographic information storage medium; a microphotographic reproduction on film or paper of a book, periodical, etc., requiring magnification to produce a readable image. in microform: in microphotographic form.

ΘΚΠ

society > communication > representation > [noun] > copying apparatus > act of copying in reduced form > microcopy

microfilm1933

microprint1933

microcopy1934

microcard1944

microform1944

microdot1946

microfiche1950

micro-opaque1952

fiche1959

1944 F. Rider Scholar & Future of Res. Libr. 94 Cataloging materials in micro form.

1958 Amer. Documentation 9 99/1 A microfiche is a piece of flat transparent film..for reproducing paper or documents in microform.

1962 A. Günther Microphotogr. in Libr. (Unesco) 14 The first supplementary note [to a catalogue entry] should indicate the microform.

1969 R. & E. Coordinator (Res. & Engin. Council Graphic Arts Industry) Apr. 4/2 Libraries make microform reproductions of everything from rare books to technical publications.

1978 W. Saffady Micrographics 215 Microform, a generic term for any information communication or storage medium containing images too small to be read without magnification.

1988 Amer. Speech 63 355 Frazer does not use the phonetic data from LANCS, which have been available in microform for the last ten years.

1993 Naše Rodina Winter 3/1 In addition to the microforms discussed..the Division also has partial coverage of Poland at 1:25,000.

This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022).

单词	microform
释义	microformn. Brit. /ˈmʌɪkrə(ʊ)fɔːm/, U.S. /ˈmaɪkroʊˌfɔrm/, /ˈmaɪkrəˌfɔrm/ Origin: Formed within English, by compounding. Etymons: micro- comb. form, form n. Etymology: < micro- comb. form + form n. In sense 1 apparently after the systematic use in mycology of Micro- in scientific Latin subgenus or section names, e.g. Micropuccinia (J. Schröter 1869, in Abhandl. der Schlesischen Ges.: Naturwissensch. u. Med. 20). 1. Mycology. A microcyclic rust fungus, spec. one that has teliospores that germinate after a resting period. Now rare.In N.E.D. this sense was treated as adjectival, perhaps because of the ambiguous wording of quot. 1900. ΘΚΠ the world > plants > particular plants > plants perceived as weeds or harmful plants > poisonous or harmful plants > harmful or parasitic fungi > [noun] > causing disease in plants > rust-fungus uredines1753 rust1801 uredo1836 rust fungus1841 mercury rust1864 uredo stage1880 uredine1889 microform1900 red-heart1907 1900 B. D. Jackson Gloss. Bot. Terms 159/1 Microform, used of a heteroecious Fungus with teleutospores only, which germinate only after a resting period. 1904 Ann. Bot. 18 361 The view of Dietel, that the lepto- and micro-forms which possess only teleutospores are the most primitive. 1912 Bull. Torrey Bot. Club 39 117 The more complex types were derived from the simpler lepto- and microforms by a progressive development of the sporophyte. 1927 Bot. Gaz. 84 114 The short-cycle lepto-form or micro-form, which normally inhabits the aecial host. 1946 Bull. Torrey Bot. Club 73 349 Large numbers of pycnia were associated with the telia, indicating that the rust is definitely a micro-form. 2. A microscopic, small, or minor form (of an organism, artefact, etc.). ΚΠ 1909 Cent. Dict. Suppl. Micro-form, a microscopic organism, or one that is too small to be studied without a microscope. 1920 New Phytologist 19 169 The micro-forms of the genus [Rosa]. 1934 Jrnl. Anthropol. Inst. 64 86 (table) Concave-scaled... Obl. sp. (‘Tardenoisian’ is a micro-form). 1937 Jrnl. Ecol. 25 10 For our present purpose we shall be dealing mainly with well-defined species or subspecies, the large number of micro-forms of ‘critical’ genera such as Rubus, Rosa, Hieracium, Taraxacum and Euphrasia being omitted. 1948 Jrnl. Ecol. 36 324 Her project is to publish a series of some 1500-1800 black and white plates, each giving a series of illustrations of a single species of plant... From the plan at this stage are excluded microforms, critical species, varieties, casuals, and escapes from cultivation. 1968 R. W. Fairbridge Encycl. Geomorphol. 1051/1 Rimstone dams greater than 40 feet in height are known while micro-forms only a few millimetres high abound on stalagmites and flowstone. 1973 Nature 16 Mar. 190/1 Sosman has classified the microforms of silica into microcrystalline, [etc.]. 1990 Jrnl. Semitic Stud. 35 323 The literature consists basically of a mass of small units (which he calls ‘microforms’) which only very late on crystallized out into ill-defined ‘macroforms’. 3. Any microphotographic information storage medium; a microphotographic reproduction on film or paper of a book, periodical, etc., requiring magnification to produce a readable image. in microform: in microphotographic form. ΘΚΠ society > communication > representation > [noun] > copying apparatus > act of copying in reduced form > microcopy microfilm1933 microprint1933 microcopy1934 microcard1944 microform1944 microdot1946 microfiche1950 micro-opaque1952 fiche1959 1944 F. Rider Scholar & Future of Res. Libr. 94 Cataloging materials in micro form. 1958 Amer. Documentation 9 99/1 A microfiche is a piece of flat transparent film..for reproducing paper or documents in microform. 1962 A. Günther Microphotogr. in Libr. (Unesco) 14 The first supplementary note [to a catalogue entry] should indicate the microform. 1969 R. & E. Coordinator (Res. & Engin. Council Graphic Arts Industry) Apr. 4/2 Libraries make microform reproductions of everything from rare books to technical publications. 1978 W. Saffady Micrographics 215 Microform, a generic term for any information communication or storage medium containing images too small to be read without magnification. 1988 Amer. Speech 63 355 Frazer does not use the phonetic data from LANCS, which have been available in microform for the last ten years. 1993 Naše Rodina Winter 3/1 In addition to the microforms discussed..the Division also has partial coverage of Poland at 1:25,000. This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022). < n.1900
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