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(Roman mythology) The sister of Aurora and Sol; the goddess of the moon; equivalent to the Greek Selene.
(chiefly science fiction or poetic) The name of Earth's moon; Moon. quotations examples
Luna that ne'er shines by day.
1868, George Villiers Duke of Buckingham, Edward Arber, The Rehearsal: With Illustrations from Previous Plays, Etc, page 129
He has but little prudence, no apprehension of consequences, and none of that melancholy which in tempraments of Luna and Venus is generally felt, and from which he is saved by the combination of Mars and Mercury.
1896, The Era Almanack, Dramatic & Musical, page 22
The different visible shapes of Luna are called her phases.
1909, Govind H. Keskar, Combined Introductory Astrology, page 14
Lagrange point L1 is the perfect location for humanity's next major space station, the natural gateway to the moon. This one-of-a-kind point in space is located on the direct line between Earth and Luna about 200,000 miles from Earth, or conversely, a mere 39,000 miles above the geometric center of Luna's nearside.
2011, Charles Lee Lesher, Aldrin Station - Rise of Luna
A female given name from Latin. quotations examples
- - - and it so happened, that in one of old Bryan's daughters named Luna, or more familiarly Loony, he perceived, or thought he perceived, some imaginary similarity in form and air to the lovely apparition.
1837, James Hogg, “The Mysterious Bride”, in Talks and Sketches: The Shepherd's Calendar, Blackie & Son, page 343
A few seconds later, Luna Lovegood emerged, trailing behind the rest of the class, a smudge of earth on her nose, and her hair tied in a knot on the top of her head.
2003, J. K. Rowling, Harry Potter and the Order of the Phoenix, Bloomsbury Publishing, page 236
(obsolete, alchemy, chemistry) Silver.