accrete

To accrete means to grow by the gradual accumulation of additional layers or matter. It describes a slow and steady build-up over time, rather than rapid expansion. The word comes from the Latin accrescere, meaning "to increase."

While often used in scientific contexts—particularly geology and astronomy—it can also be applied more broadly. Geologists describe how landforms accrete sediment carried by rivers or wind. Astronomers use it to explain how planets accrete matter from a swirling disk of gas and dust around a star. For example: "The planet's mass accreted over millions of years."

However, accretion isn't limited to physical growth. It can also describe the accumulation of abstract things like power, wealth, or knowledge. "His influence in the company accreted slowly but steadily," means his power grew gradually through consistent effort and relationship building. "Over time, myths accreted around the historical figure, making it hard to separate fact from fiction."

It's important to note that accretion implies addition—layers building upon one another. It's different from simply growing; it emphasizes the process of gathering, fusing, and accumulating over time.

Also, "accrete" is sometimes confused with "accrue." They overlap in the idea of gradual increase, but "accrue" is especially common for things like interest, benefits, or debts, while "accrete" emphasizes a layering or build-up process.

So whether you're describing the formation of a planet or the growth of someone's reputation, to accrete is to build up slowly but surely through the addition of more and more material—physical or otherwise.