trisectadj.

/ˈtrʌɪsɛkt/

Etymology: < tri- comb. form + Latin sectus cut, as in palmatisect, pinnatisect.

Botany. rare.

Of a leaf: Divided into three lobes quite to the base, but not articulated so as to form separate leaflets.

ΘΚΠ

the world > plants > part of plant > leaf > [adjective] > compound or lobed

cut1565

winged1668

pinnate1687

conjugated1690

trifoliated1698

auriculated1712

auriculate1714

pennate1723

pinnated1725

pennated1727

bigeminate1753

lyrated1753

pedated1753

pinnatifid1753

supradecomposite1753

supradecompound1753

ternated1753

trifoliate1753

lyrate1760

pedate1760

quinate1760

ternate1760

tripinnate1760

palmed1767

bilobated1770

lyre-shaped1778

pennatifid1778

finger-parted1783

superdecompound1783

bipinnate1785

biternate1785

conjugate1785

lobed1787

tergeminate1793

wing-cleft1796

yoked?1803

binate1807

septenate1807

trijugous1813

auricled1821

pinniform1821

multijugous1828

pinnulate1828

trifoliolate1828

bipinnatifid1830

multifoliolate1831

multijugate1831

quinquefoliolate1832

bifoliolate1835

pinnatisected1837

palmatifid1839

tripinnatifid1839

foliate1840

palmatipartite1840

pinnatilobate1840

pinnatipartite1840

pinnatisect1840

bipinnated1842

biconjugate1847

imparipinnate1847

paripinnate1851

pinnatulate1855

polytomous1856

multifoliate1857

pennati-partite1857

pennati-sected1857

ternato-pinnate1857

tripinnatisect1857

patentoternate1859

septemfoliate1859

bipinnatipartite1861

bipinnatisected1861

bipalmate1864

pinnatilobed1866

septenous1866

cut-leaved1870

lobing1870

ternatisect1870

tripinnated1876

trijugate1880

jugate1887

pinnulated1890

trisect1899

tridigitate1900

trigeminous1900

1899 R. L. Heinig Gloss. Bot. Terms Sect, completely divided from margin to midrib into distinct parts, in comp. as trisect.

This entry has not yet been fully updated (first published 1915; most recently modified version published online December 2019).

trisectv.

Brit.

/trʌɪˈsɛkt/, U.S.

/traɪˈsɛk(t)/

Etymology: < tri- comb. form + Latin sect-, participial stem of secāre to cut, after bisect v.

transitive. To divide into three equal parts (esp. in Geometry); sometimes gen. to divide into three parts.

ΘΚΠ

the world > relative properties > number > specific numbers > three > division into three > divide into three [verb (transitive)] > divide into three equal parts

third1455

trisect1695

1695 W. Alingham Geom. Epitomiz'd 44 Trisect any side..in the points d and e.

1705 E. Scarburgh Eng. Euclide 88 (note) From hence 'tis manifest, how to trisect a Right angle.

1786 Philos. Trans. (Royal Soc.) 76 16 Mr. Graham..perceived.. how very much more easy a given line was to bisect than to trisect or quinquesect.

1822 T. De Quincey Confessions Eng. Opium-eater 146 Could not I have reduced it a drop a day, or by adding water, have bisected or trisected a drop?

1876 A. J. Evans Through Bosnia ii. 48 We found the dwelling-houses trisected into a sleeping-room, a kitchen, and a store-room.

Derivatives

triˈsected adj. Botany = trisect adj.

ΚΠ

1828 N. Webster Amer. Dict. Eng. Lang. Trisected, divided into three equal parts.

1866 J. Lindley & T. Moore Treasury Bot. II. 1174 Trisected, cut deeply into three parts.

triˈsecting n.

ΘΚΠ

the world > relative properties > number > specific numbers > three > division into three > [noun] > division into three equal parts

trisection1664

trisecting1694

1694 Philos. Trans. (Royal Soc.) 18 70 So the halving, trisecting, quartering, &c. is performed by extracting the Square Root, the Cubick, Biquadratick Roots, &c. of the Terms.

1809 Cavendish Philos. Trans. (Royal Soc.) 99 227 In trisecting, the greatest error we are liable to does not exceed that of bisection in a greater proportion than that of 4 to 3.

This entry has not yet been fully updated (first published 1915; most recently modified version published online March 2022).

单词	trisect
释义	trisectadj. /ˈtrʌɪsɛkt/ Etymology: < tri- comb. form + Latin sectus cut, as in palmatisect, pinnatisect. Botany. rare. Of a leaf: Divided into three lobes quite to the base, but not articulated so as to form separate leaflets. ΘΚΠ the world > plants > part of plant > leaf > [adjective] > compound or lobed cut1565 winged1668 pinnate1687 conjugated1690 trifoliated1698 auriculated1712 auriculate1714 pennate1723 pinnated1725 pennated1727 bigeminate1753 lyrated1753 pedated1753 pinnatifid1753 supradecomposite1753 supradecompound1753 ternated1753 trifoliate1753 lyrate1760 pedate1760 quinate1760 ternate1760 tripinnate1760 palmed1767 bilobated1770 lyre-shaped1778 pennatifid1778 finger-parted1783 superdecompound1783 bipinnate1785 biternate1785 conjugate1785 lobed1787 tergeminate1793 wing-cleft1796 yoked?1803 binate1807 septenate1807 trijugous1813 auricled1821 pinniform1821 multijugous1828 pinnulate1828 trifoliolate1828 bipinnatifid1830 multifoliolate1831 multijugate1831 quinquefoliolate1832 bifoliolate1835 pinnatisected1837 palmatifid1839 tripinnatifid1839 foliate1840 palmatipartite1840 pinnatilobate1840 pinnatipartite1840 pinnatisect1840 bipinnated1842 biconjugate1847 imparipinnate1847 paripinnate1851 pinnatulate1855 polytomous1856 multifoliate1857 pennati-partite1857 pennati-sected1857 ternato-pinnate1857 tripinnatisect1857 patentoternate1859 septemfoliate1859 bipinnatipartite1861 bipinnatisected1861 bipalmate1864 pinnatilobed1866 septenous1866 cut-leaved1870 lobing1870 ternatisect1870 tripinnated1876 trijugate1880 jugate1887 pinnulated1890 trisect1899 tridigitate1900 trigeminous1900 1899 R. L. Heinig Gloss. Bot. Terms Sect, completely divided from margin to midrib into distinct parts, in comp. as trisect. This entry has not yet been fully updated (first published 1915; most recently modified version published online December 2019). trisectv. Brit. /trʌɪˈsɛkt/, U.S. /traɪˈsɛk(t)/ Etymology: < tri- comb. form + Latin sect-, participial stem of secāre to cut, after bisect v. transitive. To divide into three equal parts (esp. in Geometry); sometimes gen. to divide into three parts. ΘΚΠ the world > relative properties > number > specific numbers > three > division into three > divide into three [verb (transitive)] > divide into three equal parts third1455 trisect1695 1695 W. Alingham Geom. Epitomiz'd 44 Trisect any side..in the points d and e. 1705 E. Scarburgh Eng. Euclide 88 (note) From hence 'tis manifest, how to trisect a Right angle. 1786 Philos. Trans. (Royal Soc.) 76 16 Mr. Graham..perceived.. how very much more easy a given line was to bisect than to trisect or quinquesect. 1822 T. De Quincey Confessions Eng. Opium-eater 146 Could not I have reduced it a drop a day, or by adding water, have bisected or trisected a drop? 1876 A. J. Evans Through Bosnia ii. 48 We found the dwelling-houses trisected into a sleeping-room, a kitchen, and a store-room. Derivatives triˈsected adj. Botany = trisect adj. ΚΠ 1828 N. Webster Amer. Dict. Eng. Lang. Trisected, divided into three equal parts. 1866 J. Lindley & T. Moore Treasury Bot. II. 1174 Trisected, cut deeply into three parts. triˈsecting n. ΘΚΠ the world > relative properties > number > specific numbers > three > division into three > [noun] > division into three equal parts trisection1664 trisecting1694 1694 Philos. Trans. (Royal Soc.) 18 70 So the halving, trisecting, quartering, &c. is performed by extracting the Square Root, the Cubick, Biquadratick Roots, &c. of the Terms. 1809 Cavendish Philos. Trans. (Royal Soc.) 99 227 In trisecting, the greatest error we are liable to does not exceed that of bisection in a greater proportion than that of 4 to 3. This entry has not yet been fully updated (first published 1915; most recently modified version published online March 2022). < adj.1899v.1694
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