heliacal

pronunciation

How to pronounce heliacal in British English: UK [hɪ'laɪəkəl]word uk audio image

How to pronounce heliacal in American English: US [hɪ'laɪəkəl] word us audio image

  • Adjective:
    pertaining to or near the sun; especially the first rising of a star after and last setting before its invisibility owing to its conjunction with the sun

Word Origin

heliacal (adj.)
"pertaining to the sun," c. 1600, with -al (1) and Greek heliakos "of the sun," from helios "sun" (see sol). The heliacal year is reckoned from the heliacal rising of Sirius; thus it also is known as the canicular year.

Example

1. The method of contiguity was that adopted by the ancient egyptians and the greeks ; it involved the observation of heliacal risings and settings , i.e.the risings and settings of stars near the ecliptic just before sunrise and just after sunset .

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