Definition of "ephemerid" []

• An insect of the order Ephemeroptera; a mayfly. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Those who play a waiting game have matters more in their own hands, time gives them double chances; whereas if success does not come at once to the ephemerid he misses it altogether."
• "In fact, it's quite normal for Dutch scientific terminology to occur in pairs composed of a "difficult" and a homier variant: ephemerid can be translated as efemeride or as eendagsvlieg"