ISOGONIC


Meaning of ISOGONIC in English

[ ˌʌɪsə(ʊ)'gɒnɪk ]

■ adjective Geography denoting a line on a map connecting points at which the magnetic declination is the same.

Origin

C19: from Gk isogōnios 'equiangular' + -ic .

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.