first quarter


noun Astronomy.

the instant, approximately one week after a new moon, when one half of the moon's disk is illuminated by the sun.

QUIZZES

TAKE THIS QUIZ TO SEE WHAT YOU KNOW ABOUT 2ND-3RD GRADE VOCAB FROM BOOKS!

Are you learning new vocabulary? Or do you just have an interest in words? Either way, this quiz is for you.
Question 1 of 10
orchard

Origin of first quarter

First recorded in 1905–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for first quarter

British Dictionary definitions for first quarter

first quarter

noun

one of the four principal phases of the moon, occurring between new moon and full moon, when half of the lighted surface is visible from earthCompare last quarter
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012