the unit of ephemeris time, defined as a precise fraction of the length of the tropical year 1900.
GEE WHILLIKERS! WAIT TILL YOU SEE THIS WORD OF THE DAY QUIZ!
Do you remember all the words from last week, September 21–27, 2020? Then this quiz should be butyraceous.
Question 1 of 7
What does “yare” mean?
Origin of ephemeris second
First recorded in 1965–70
Words nearby ephemeris second
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020