English
heliolongitudinal
From helio- + longitudinal.
Formed from helio- + longitudinal
Proto-Indo-European *sóh₂wl̥ ‘sun’
Proto-Hellenic *hāwélios ‘sun’
Ancient Greek ἥλιος ‘sun’
English helio-
Proto-Indo-European *dlongʰos ‘long’
Proto-Italic *(d)longos ‘long’
Latin longus ‘far, long’
Latin longitūdō ‘length, longitude’
English longitudinal
Today it means
adj Relating to heliolongitude.
Language periods are conventional ranges, not dates for this word.
Etymograph / heliolongitudinal