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heliacal

Syllabification: (he·li·a·cal)
Pronunciation: /həˈlīəkəl/
Definition of heliacal

adjective

Astronomy
  • relating to or near the sun.

Origin:

mid 16th century: via late Latin from Greek hēliakos (from hēlios 'sun') + -al

heliacal in other Oxford dictionaries

Definition of heliacal in the British & World English dictionary