Get Our Free Apps
Voice Search, Favorites,
Word of the Day, and More
Join Us on FB & Twitter
Get the Word of the Day and More

January 02, 2013

Word of the Day

  • heliacal
  • audio pronunciation
  • \hih-LYE-uh-kul\
  • DEFINITION

adjective

: relating to or near the sun — used especially of the last setting of a star before and its first rising after invisibility due to conjunction with the sun's rising and setting
  • EXAMPLES

The heliacal rising of Pleiades marked the beginning of summer in the old Julian calendar, which was introduced by Julius Caesar.

"Nowadays, if you wish to watch the heliacal rising of Sirius, you've got to wait until August. This is because Earth wobbles on its axis ... and over several millennia, the positions of celestial objects shift slightly." — From an article by Dennis Mammana in Newsday (New York), July 14, 2012

  • DID YOU KNOW?

The word "heliacal" rose in the mid-16th century. Its source is the Greek word "hēlios," meaning "sun." Helios is also the Sun god of ancient Greece. "Heliacal" often suggests a relationship between a star and the sun as they appear to the human eye in the sky, as in our example sentences. It's also used in reference to the ancient Egyptian year, which began on the date when Sirius (or the Dog Star) first appeared on the eastern horizon at sunrise. English speakers have referred to this year as the heliacal year or the Sothic year. ("Sothic" comes from "Sōthōs," the Greek word for Sirius.)

Word Family Quiz: What element is related to "heliacal" and has the atomic number 2? The answer is ...

  • MORE WORDS OF THE DAY

Visit our archives to see previous selections ยป

  • FEATURED ITEM FROM OUR STORE

An expressive t-shirt:

"Use Your Words"

Browse all items »

  • PODCAST

Theme music by Joshua Stamper ©2006 New Jerusalem Music/ASCAP

  • SUBSCRIBE

Subscribe to the Word of the Day e-mail

Manage Your Account