September 28, 2026

Ephemeron

noun

Definition

An insect with a very short adult life; more broadly, anything of brief duration. Mayflies are the archetypal ephemeron, living only hours as adults.

Example Sentence

“The mayfly is nature's most poignant ephemeron, spending three years as a larva before dying in a single day.”

Etymology

From Greek ephemeron, neuter of ephemeros (lasting only a day).

Scrabble Score

E1P3H4E1M3E1R1O1N1

EPHEMERON scores 16 points in Scrabble.

Synonyms & Related Words

mayfly short-lived creature transient brief thing

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