ephemeron

• Существительное, обозначающее что-либо недолговечное или преходящее, например, насекомое, которое живёт всего один день в своей крылатой форме.

A noun referring to anything that is short-lived or transitory, such as an insect that lives only for a day in its winged form.

irregular plural

1. Short-lived organismC2formal

   A living being, especially an insect, that has a very brief lifespan, often only a day in its adult form.

   Недолговечный организм

   • The mayfly is a classic example of an ephemeron.
   • Ephemerons live for such a short time that they often don't need to eat.
   • Scientists study ephemerons to understand rapid life cycles.

   Synonymsdayflyephemeridmayfly

   Antonymsperennial

2. Transient thingC2formal

   Anything that is fleeting or lasts for a very short period.

   Эфемерное явление

   • Fame can be an ephemeron, here today and gone tomorrow.
   • The beauty of a cherry blossom is an ephemeron.
   • He collected ephemerons like old tickets and notes.

   Synonymsephemeratransient

   Antonymsconstancydurabilityenduranceeternitypermanenceperpetuitystability