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tonofibrilla
tonofibrilla n. 
/ˌtɒnə(ʊ)fᵻˈbrɪlə/, /ˌtəʊnə(ʊ)fʌɪˈbrɪlə/, /ˌtəʊnə(ʊ)fᵻˈbrɪlə/, /ˌtoʊnoʊfəˈbrɪlə/, /ˌtɑnoʊˌfaɪˈbrɪlə/, /ˌtɑnoʊfəˈbrɪlə/ (a) Histology = tonofibril n.; (b) Entomology a non-contractile fibril in an insect that passes from a myofibril through the epidermis into the cuticle.
Brit. /ˌtɒnə(ʊ)fʌɪˈbrɪlə/
, /ˌtɒnə(ʊ)fʌɪˈbrɪlə//ˌtɒnə(ʊ)fᵻˈbrɪlə//ˌtəʊnə(ʊ)fʌɪˈbrɪlə//ˌtəʊnə(ʊ)fᵻˈbrɪlə/U.S. /ˌtoʊnoʊˌfaɪˈbrɪlə/
, /ˌtoʊnoʊˌfaɪˈbrɪlə//ˌtoʊnoʊfəˈbrɪlə//ˌtɑnoʊˌfaɪˈbrɪlə//ˌtɑnoʊfəˈbrɪlə/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
the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [noun] > general parts > thread-like structure
tonofibrilla1925
1925 E. B. Wilson Cell (ed. 3) i. 41 The greater number of writers have..accepted the conclusion..that they are of the nature of supporting or skeletal structures, hence the term tonofibrillæ (Heidenhain).
1935 R. E. Snodgrass Princ. Insect Morphol. iii. 63 It frequently appears not only that the tonofibrillae traverse the epidermal layer, but that they penetrate a varying distance into the cuticula.
1969 R. F. Chapman Insects xii. 211 In Musca each myofibril is attached to the cuticle by about twelve tonofibrillae.
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as lemmas