(Greek: above, over, on, upon; besides; in addition to; toward; among)
2. One of the first leaves to appear after germination (there may be one, two, or more); the foliar portion of the embryo as found in the seed.
2. Living or lasting only for a day, as certain plants or insects do: "There are ephemeral organisms that grow, reproduce, and die within a few hours or a day."
"Elisha put flowers from her garden into a vase and they were an ephemeral bouquet because she forgot to put water into the container as a result of being distracted by an unexpected visitor."3. Etymology: Ephemeral, now used fairly loosely for "transitory", originally meant specifically "lasting only one day". It comes from Greek ephemeros, a compound word formed from the prefix epi-, "on" and hemera, "day".
Go to this Word A Day Revisited Index
for a list of additional Mickey Bach illustrations.
2. Fauna and flora of sea-bottom between low-water mark and hundred-fathom line or the 200-meter line.
2. Surviving, applied to endemic species that are relics of a former flora or fauna; growing on the exterior of living organisms; living on a surface, as of the sea bottom.
An antonym is hypobiotic.
Urchins and grazing fishes feed on epibionts of reefs and often scrape off bits of calcium carbonate; resulting in bioerosion.