Astron.
the instant, approximately one week after a new moon, when one half of the moon's disk is illuminated by the sun. See diag. under moon .
[ 1905-10 ]
Astron.
the instant, approximately one week after a new moon, when one half of the moon's disk is illuminated by the sun. See diag. under moon .
[ 1905-10 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012