Lacking permanence, fleeting. For example, His book attracted a great deal of attention but quickly went out of print--here today and gone tomorrow. Originally alluding to the briefness of the human lifespan, this phrase was first recorded in John Calvin's Life and Conversion of a Christian Man (1549): "This proverb that man is here today and gone tomorrow."

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Company. All rights reserved.