- Today's Word
Accretion
uh-KREE-shuhn
Definition
- (noun) The gradual accumulation or growth of layers, particles, or matter over time.
Example
The coastline expanded slowly due to the accretion of sand carried by the tides.
Fun Fact
“Accretion” comes from the Latin accretio, meaning “growth” or “increase.” The term is widely used in science, such as in astronomy, where it describes the process of material gathering around a celestial body. It also has metaphorical applications, often symbolizing the slow but steady buildup of ideas, habits, or relationships.
(verb) To suggest or assume something as a basis for reasoning or argument without prior proof.
The scientist postulated that the mysterious signals were coming from a previously undiscovered layer of the atmosphere, a theory that took years to confirm.
Postulate derives from the Latin postulare, meaning “to demand” or “to claim,” rooted in poscere, meaning “to ask urgently.” In medieval logic and mathematics, a postulate was a foundational assumption that didn’t require proof — something demanded to be accepted as a starting point. Euclid’s famous geometric postulates, written around 300 BCE, are among the most influential examples in intellectual history.