gnatho-comb. form

Stress is usually determined by a subsequent element and vowels may be reduced accordingly.

Etymology: < Greek γνάθος jaw.

Forming nouns and adjectives.

gnathoˈcephalon n.

Brit.

/ˌneɪθə(ʊ)ˈsɛfəlɒn/

/ˌnaθə(ʊ)ˈsɛfəlɒn/

/ˌneɪθə(ʊ)ˈkɛfəlɒn/

/ˌnaθə(ʊ)ˈkɛfəlɒn/

U.S.

/ˌneɪθoʊˈsɛfəl(ə)n/

/ˌneɪθəˈsɛfəl(ə)n/

/ˌnæθoʊˈsɛfəl(ə)n/

/ˌnæθəˈsɛfəl(ə)n/

(see quot. 1935).

ΘΚΠ

the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [noun] > head > mouth-parts or trophi > gnathocephalon

gnathocephalon1935

1935 R. E. Snodgrass Princ. Insect Morphol. vi. 102 The gnathocephalon is the region of the insect head that supports the mandibles, the maxillae, and the labium.

1964 R. M. Fox & J. W. Fox Introd. Compar. Entomol. ii. 42 The gnathocephalon bears the mouthparts.

gnathoceˈphalic adj.

Brit.

/ˌneɪθə(ʊ)sᵻˈfalɪk/

/ˌnaθə(ʊ)sᵻˈfalɪk/

/ˌneɪθə(ʊ)kɛˈfalɪk/

/ˌnaθə(ʊ)kɛˈfalɪk/

U.S.

/ˌneɪθoʊsəˈfælɪk/

/ˌnæθoʊsəˈfælɪk/

ΚΠ

1964 R. M. Fox & J. W. Fox Introd. Compar. Entomol. ii. 42 The gnathocephalic ganglia frequently are fused into a single mass.

gnathochiˈlarium n.

Brit.

/ˌneɪθə(ʊ)kʌɪˈlɛːrɪəm/

/ˌnaθə(ʊ)kʌɪˈlɛːrɪəm/

U.S.

/ˌneɪθoʊkaɪˈlɛriəm/

/ˌnæθoʊkaɪˈlɛriəm/

a mouth-part found in Diplopoda.

ΚΠ

1887 Ann. N.Y. Acad. Sci. 4 39 This genus [sc. Nannolene]..approaches Julomorpha, especially in the construction of the gnathochilarium.

1964 R. M. Fox & J. W. Fox Introd. Compar. Entomol. iii. 85 Diplopods have an accessory feeding structure located behind and between the mandibles, a highly modified affair called the gnathochilarium.

gnathodynaˈmometer n.

Brit.

/ˌneɪθə(ʊ)dʌɪnəˈmɒmᵻtə/

/ˌnaθə(ʊ)dʌɪnəˈmɒmᵻtə/

U.S.

/ˌneɪθoʊˌdaɪnəˈmɑmədər/

/ˌnæθoʊˌdaɪnəˈmɑmədər/

(see quot. 1969).

ΚΠ

1959 New Scientist 2 Apr. 736/1 Many devices [for measuring biting power] have been produced.., with the titles of oral force-meters or gnathodynamometers.

1969 Gloss. Terms Dentistry (B.S.I.) 75 Gnathodynamometer, an instrument for measuring the force exerted in closing the jaws.

gnathoˈsoma n.

Brit.

/ˌneɪθə(ʊ)ˈsəʊmə/

/ˌnaθə(ʊ)ˈsəʊmə/

U.S.

/ˌneɪθəˈsoʊmə/

/ˌnæθəˈsoʊmə/

ΚΠ

1948 Smithsonian Misc. Coll. CX. x. 61 The distinctive feature relating to the feeding apparatus of the Acarina is the presence of a discrete head structure carrying the mouth parts, known as the capitulum, capitellum, or gnathosoma.

1959 T. E. Hughes Mites x. 135 The gnathosoma is movable on the rest of the body and is well sclerotized... The gnathosomal roof consists of the fused tergites of the segments concerned.

ˈgnathosome n.

Brit.

/ˈneɪθə(ʊ)səʊm/

/ˈnaθə(ʊ)səʊm/

U.S.

/ˈneɪθəˌsoʊm/

/ˈnæθəˌsoʊm/

(see quot. 1964).

ΚΠ

1964 R. M. Fox & J. W. Fox Introd. Compar. Entomol. iii. 81 The large, complex order Acarida is characterized by the presence of a gnathosome (capitulum) formed from anterior segments and having the appearance of a little head bearing the mouthparts.

gnathoˈsomal adj.

Brit.

/ˌneɪθə(ʊ)ˈsəʊml/

/ˌnaθə(ʊ)ˈsəʊml/

U.S.

/ˌneɪθəˈsoʊm(ə)l/

/ˌnæθəˈsoʊm(ə)l/

gnathoˈtheca n.

Brit.

/ˌneɪθə(ʊ)ˈθiːkə/

/ˌnaθə(ʊ)ˈθiːkə/

U.S.

/ˌneɪθəˈθikə/

/ˌneɪθoʊˈθikə/

/ˌnæθəˈθikə/

/ˌnæθoʊˈθikə/

the horny covering of the lower beak of a bird.

ΘΚΠ

the world > animals > birds > parts of or bird defined by > [noun] > beak or bill > upper or lower beak > part or covering of lower beak

gonys1836

interramicorn1866

ramicorn1866

gnathotheca1870

1870 J. G. Cooper & S. F. Baird Ornithol. (Geol. Surv. Calif.) I. 567 Gnathotheca, the covering of the lower jaw.

1889 Cent. Dict. Gnathotheca.

1890 E. Coues Handbk. Field & Gen. Ornithol. ii. iii. 151 The entire covering of both jaws together is called rhamphotheca..of the under, gnathotheca..but these terms are not much used.

1959 J. Van Tyne & A. J. Berger Fund. Ornithol. ii. 31 The oral cavity is bounded by the horny coverings of the upper (rhinotheca) and lower (gnathotheca) mandibles.

This entry has not yet been fully updated (first published 1972; most recently modified version published online March 2022).

单词	gnatho-
释义	gnatho-comb. form Stress is usually determined by a subsequent element and vowels may be reduced accordingly. Etymology: < Greek γνάθος jaw. Forming nouns and adjectives. gnathoˈcephalon n. Brit. /ˌneɪθə(ʊ)ˈsɛfəlɒn/ , /ˌnaθə(ʊ)ˈsɛfəlɒn/ , /ˌneɪθə(ʊ)ˈkɛfəlɒn/ , /ˌnaθə(ʊ)ˈkɛfəlɒn/ , U.S. /ˌneɪθoʊˈsɛfəl(ə)n/ , /ˌneɪθəˈsɛfəl(ə)n/ , /ˌnæθoʊˈsɛfəl(ə)n/ , /ˌnæθəˈsɛfəl(ə)n/ (see quot. 1935). ΘΚΠ the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [noun] > head > mouth-parts or trophi > gnathocephalon gnathocephalon1935 1935 R. E. Snodgrass Princ. Insect Morphol. vi. 102 The gnathocephalon is the region of the insect head that supports the mandibles, the maxillae, and the labium. 1964 R. M. Fox & J. W. Fox Introd. Compar. Entomol. ii. 42 The gnathocephalon bears the mouthparts. gnathoceˈphalic adj. Brit. /ˌneɪθə(ʊ)sᵻˈfalɪk/ , /ˌnaθə(ʊ)sᵻˈfalɪk/ , /ˌneɪθə(ʊ)kɛˈfalɪk/ , /ˌnaθə(ʊ)kɛˈfalɪk/ , U.S. /ˌneɪθoʊsəˈfælɪk/ , /ˌnæθoʊsəˈfælɪk/ ΚΠ 1964 R. M. Fox & J. W. Fox Introd. Compar. Entomol. ii. 42 The gnathocephalic ganglia frequently are fused into a single mass. gnathochiˈlarium n. Brit. /ˌneɪθə(ʊ)kʌɪˈlɛːrɪəm/ , /ˌnaθə(ʊ)kʌɪˈlɛːrɪəm/ , U.S. /ˌneɪθoʊkaɪˈlɛriəm/ , /ˌnæθoʊkaɪˈlɛriəm/ a mouth-part found in Diplopoda. ΚΠ 1887 Ann. N.Y. Acad. Sci. 4 39 This genus [sc. Nannolene]..approaches Julomorpha, especially in the construction of the gnathochilarium. 1964 R. M. Fox & J. W. Fox Introd. Compar. Entomol. iii. 85 Diplopods have an accessory feeding structure located behind and between the mandibles, a highly modified affair called the gnathochilarium. gnathodynaˈmometer n. Brit. /ˌneɪθə(ʊ)dʌɪnəˈmɒmᵻtə/ , /ˌnaθə(ʊ)dʌɪnəˈmɒmᵻtə/ , U.S. /ˌneɪθoʊˌdaɪnəˈmɑmədər/ , /ˌnæθoʊˌdaɪnəˈmɑmədər/ (see quot. 1969). ΚΠ 1959 New Scientist 2 Apr. 736/1 Many devices [for measuring biting power] have been produced.., with the titles of oral force-meters or gnathodynamometers. 1969 Gloss. Terms Dentistry (B.S.I.) 75 Gnathodynamometer, an instrument for measuring the force exerted in closing the jaws. gnathoˈsoma n. Brit. /ˌneɪθə(ʊ)ˈsəʊmə/ , /ˌnaθə(ʊ)ˈsəʊmə/ , U.S. /ˌneɪθəˈsoʊmə/ , /ˌnæθəˈsoʊmə/ ΚΠ 1948 Smithsonian Misc. Coll. CX. x. 61 The distinctive feature relating to the feeding apparatus of the Acarina is the presence of a discrete head structure carrying the mouth parts, known as the capitulum, capitellum, or gnathosoma. 1959 T. E. Hughes Mites x. 135 The gnathosoma is movable on the rest of the body and is well sclerotized... The gnathosomal roof consists of the fused tergites of the segments concerned. ˈgnathosome n. Brit. /ˈneɪθə(ʊ)səʊm/ , /ˈnaθə(ʊ)səʊm/ , U.S. /ˈneɪθəˌsoʊm/ , /ˈnæθəˌsoʊm/ (see quot. 1964). ΚΠ 1964 R. M. Fox & J. W. Fox Introd. Compar. Entomol. iii. 81 The large, complex order Acarida is characterized by the presence of a gnathosome (capitulum) formed from anterior segments and having the appearance of a little head bearing the mouthparts. gnathoˈsomal adj. Brit. /ˌneɪθə(ʊ)ˈsəʊml/ , /ˌnaθə(ʊ)ˈsəʊml/ , U.S. /ˌneɪθəˈsoʊm(ə)l/ , /ˌnæθəˈsoʊm(ə)l/ gnathoˈtheca n. Brit. /ˌneɪθə(ʊ)ˈθiːkə/ , /ˌnaθə(ʊ)ˈθiːkə/ , U.S. /ˌneɪθəˈθikə/ , /ˌneɪθoʊˈθikə/ , /ˌnæθəˈθikə/ , /ˌnæθoʊˈθikə/ the horny covering of the lower beak of a bird. ΘΚΠ the world > animals > birds > parts of or bird defined by > [noun] > beak or bill > upper or lower beak > part or covering of lower beak gonys1836 interramicorn1866 ramicorn1866 gnathotheca1870 1870 J. G. Cooper & S. F. Baird Ornithol. (Geol. Surv. Calif.) I. 567 Gnathotheca, the covering of the lower jaw. 1889 Cent. Dict. Gnathotheca. 1890 E. Coues Handbk. Field & Gen. Ornithol. ii. iii. 151 The entire covering of both jaws together is called rhamphotheca..of the under, gnathotheca..but these terms are not much used. 1959 J. Van Tyne & A. J. Berger Fund. Ornithol. ii. 31 The oral cavity is bounded by the horny coverings of the upper (rhinotheca) and lower (gnathotheca) mandibles. This entry has not yet been fully updated (first published 1972; most recently modified version published online March 2022). < comb. form1870
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