microfilamentn.

Brit.

/ˈmʌɪkrə(ʊ)ˌfɪləm(ə)nt/, U.S.

/ˌmaɪkroʊˈfɪləm(ə)nt/

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

Etymology: < micro- comb. form + filament n.

A very fine filament; (Cell Biology) a type of actin filament, 4–7 nanometres in diameter, found as a cytoskeletal element in eukaryotic cells and forming a major part of the contractile apparatus of the cell.

ΘΚΠ

the world > life > biology > substance > cell > cell substance > [noun] > protoplasm or cytoplasm > structure or substance in cytoplasm

microsome1881

myoneme1893

tonofibril1901

Holmgren1921

tonofibrilla1925

cytoskeleton1936

protofibril1948

protofilament1960

microfilament1963

tonofilament1964

cytosol1965

1963 Proc. National Acad. Sci. U.S.A. 50 706 As the growing tip advances, it continuously sends out a spray or flare of rapidly elongating and retracting microfilaments.

1965 Jrnl. Cell Biol. 27 39 a/2 Microfilaments are more prominent in non-motile pinocytosing cells.

1970 New Scientist 30 Apr. 228/3 Microfilaments have been made in a wide variety of metals, alloys, silicides, borides, oxides and mixed oxides.

1974 D. Webster & M. Webster Compar. Vertebr. Morphol. ix. 182 The axon contains microtubules, microfilaments, and a few mitochondria.

1984 E. Holtzman & A. B. Novikoff Cells & Organelles (ed. 3) ii. xi. 282 The term microfilament, originally used for many types of cytoplasmic filament, has increasingly come to be used solely for the 5- to 6-nm actin filaments.

1998 New Scientist 28 Mar. 17/2 Cytochalasin depolymerises the microfilaments, essentially breaking down their protein structure..into simpler components.

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

单词	microfilament
释义	microfilamentn. Brit. /ˈmʌɪkrə(ʊ)ˌfɪləm(ə)nt/, U.S. /ˌmaɪkroʊˈfɪləm(ə)nt/ Origin: Formed within English, by compounding. Etymons: micro- comb. form, filament n. Etymology: < micro- comb. form + filament n. A very fine filament; (Cell Biology) a type of actin filament, 4–7 nanometres in diameter, found as a cytoskeletal element in eukaryotic cells and forming a major part of the contractile apparatus of the cell. ΘΚΠ the world > life > biology > substance > cell > cell substance > [noun] > protoplasm or cytoplasm > structure or substance in cytoplasm microsome1881 myoneme1893 tonofibril1901 Holmgren1921 tonofibrilla1925 cytoskeleton1936 protofibril1948 protofilament1960 microfilament1963 tonofilament1964 cytosol1965 1963 Proc. National Acad. Sci. U.S.A. 50 706 As the growing tip advances, it continuously sends out a spray or flare of rapidly elongating and retracting microfilaments. 1965 Jrnl. Cell Biol. 27 39 a/2 Microfilaments are more prominent in non-motile pinocytosing cells. 1970 New Scientist 30 Apr. 228/3 Microfilaments have been made in a wide variety of metals, alloys, silicides, borides, oxides and mixed oxides. 1974 D. Webster & M. Webster Compar. Vertebr. Morphol. ix. 182 The axon contains microtubules, microfilaments, and a few mitochondria. 1984 E. Holtzman & A. B. Novikoff Cells & Organelles (ed. 3) ii. xi. 282 The term microfilament, originally used for many types of cytoplasmic filament, has increasingly come to be used solely for the 5- to 6-nm actin filaments. 1998 New Scientist 28 Mar. 17/2 Cytochalasin depolymerises the microfilaments, essentially breaking down their protein structure..into simpler components. This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022). < n.1963
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