What does accrete mean?
Accrete is a verb meaning to grow or increase gradually by the addition of new material, layer upon layer. It is most at home in the sciences: astronomers describe how young planets accrete dust and gas from the disks surrounding newborn stars, while geologists use it for coastlines that accrete sediment carried by tides and rivers. Beyond science, the word can describe any slow, incremental accumulation — capital, influence, or detail — though such figurative uses remain relatively rare. Accrete implies steady, adhesive growth rather than sudden expansion, giving it a patient, almost geological connotation. Derived from the Latin accrescere, 'to grow,' it shares deep roots with words like increase and crescendo. Its noun form, accretion, is even more widely used, naming both the physical process and the accumulated material itself. For readers encountering dense scientific writing about planet formation or coastal change, understanding accrete is essential vocabulary.
verbTo grow or increase gradually by the addition of new layers or particles; to accumulate or be accumulated over time.
- To grow or enlarge gradually by the external addition of new layers or particles (especially in geology and astronomy).
- To accumulate or cause to accumulate gradually over time (used more broadly for anything that builds up incrementally).
"Over millions of years, dust and ice slowly accreted to form the planets of our solar system."
"The island accreted new land as sediment deposited along its shores each year."
"Wealth tends to accrete quietly among those who reinvest their gains decade after decade."
Every planet you've ever stood on was built by accretion — trillions of tiny collisions of dust and rock sticking together over millions of years.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of accrete
Accrete derives from the Latin verb accrescere, formed from ad- ('to, toward') plus crescere ('to grow'), literally meaning 'to grow toward' or 'to grow upon.' The word entered English in the early 17th century, initially carrying the sense of growing or being added to incrementally. It belongs to a large family of English words descended from crescere, including increase, decrease, concrete, crescendo, and accrue — the last of which is its closest semantic relative, having traveled through Old French from the same Latin source.
Related word forms
How accrete is actually used
Predominantly a formal, scientific term; most common in astronomy, geology, and physics, where it describes how celestial bodies and landforms grow. In general prose it appears less often but carries a precise, technical connotation of gradual accumulation through adhesion rather than explosive growth.
Easily confused with accrete
Accrue refers specifically to the gradual buildup of money, interest, or benefits over time, while accrete describes physical growth by the addition of layers or material.