agonicadj.

Brit.

/eɪˈɡɒnɪk/,

/əˈɡɒnɪk/, U.S.

/eɪˈɡɑnɪk/,

/əˈɡɑnɪk/

Origin: A borrowing from Greek, combined with an English element; modelled on a German lexical item. Etymons: Greek ἀγώνιος , -ic suffix.

Etymology: < ancient Greek ἀγώνιος without angle ( < ἀ- a- prefix⁶ + γωνία angle: see -gon comb. form) + -ic suffix, after German agonisch (1840 or earlier).

Designating an irregular imaginary line passing through both the North Pole and the north magnetic pole of the earth, at any point on which a compass needle points to true north (i.e. the magnetic declination is zero); chiefly in agonic line.

ΘΚΠ

the world > the earth > geodetic references > [noun] > pole > magnetic > line of

agonic line1846

1846 E. West tr. C. Peschel Elem. Physics II. 276 These lines of no declination, to which Professor August has given the designation of agonic lines [Ger. agonische Linien], are two in number: one, called the American agone, is in the western hemisphere; the other, or Asiatic, is in the eastern hemisphere.

1884 Amer. Jrnl. Sci. 127 246 Another plate exhibits the more or less exactly known positions of the agonic line of the North Atlantic for the epochs of 1500, 1600, 1700, [etc.].

1897 Terrestr. Magnetism & Atmospheric Electr. 2 123 (heading) Secular variation in the position of the agonic curve of North America between a.d. 1700 and 1900.

1951 Isis 42 42/1 In 1550 the agonic line ran from the Windward Islands past a point slightly west of the Azores veering almost due North from there.

2005 R. Curtis Backpacker's Field Man. (rev. ed.) vi. 146 My trick for North America is to remember the location of the zero declination line (called the agonic line) roughly as the Mississippi River.

This entry has been updated (OED Third Edition, September 2012; most recently modified version published online December 2021).

单词	agonic
释义	agonicadj. Brit. /eɪˈɡɒnɪk/, /əˈɡɒnɪk/, U.S. /eɪˈɡɑnɪk/, /əˈɡɑnɪk/ Origin: A borrowing from Greek, combined with an English element; modelled on a German lexical item. Etymons: Greek ἀγώνιος , -ic suffix. Etymology: < ancient Greek ἀγώνιος without angle ( < ἀ- a- prefix⁶ + γωνία angle: see -gon comb. form) + -ic suffix, after German agonisch (1840 or earlier). Designating an irregular imaginary line passing through both the North Pole and the north magnetic pole of the earth, at any point on which a compass needle points to true north (i.e. the magnetic declination is zero); chiefly in agonic line. ΘΚΠ the world > the earth > geodetic references > [noun] > pole > magnetic > line of agonic line1846 1846 E. West tr. C. Peschel Elem. Physics II. 276 These lines of no declination, to which Professor August has given the designation of agonic lines [Ger. agonische Linien], are two in number: one, called the American agone, is in the western hemisphere; the other, or Asiatic, is in the eastern hemisphere. 1884 Amer. Jrnl. Sci. 127 246 Another plate exhibits the more or less exactly known positions of the agonic line of the North Atlantic for the epochs of 1500, 1600, 1700, [etc.]. 1897 Terrestr. Magnetism & Atmospheric Electr. 2 123 (heading) Secular variation in the position of the agonic curve of North America between a.d. 1700 and 1900. 1951 Isis 42 42/1 In 1550 the agonic line ran from the Windward Islands past a point slightly west of the Azores veering almost due North from there. 2005 R. Curtis Backpacker's Field Man. (rev. ed.) vi. 146 My trick for North America is to remember the location of the zero declination line (called the agonic line) roughly as the Mississippi River. This entry has been updated (OED Third Edition, September 2012; most recently modified version published online December 2021). < adj.1846
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