What does autocatalytic mean?
Autocatalytic describes something that catalyzes itself. In chemistry, an autocatalytic reaction is one in which one of the products speeds up the very reaction that produces it, so the process starts slowly and then accelerates sharply as the catalyst accumulates — a pattern seen in some enzyme systems and central to theories about how life's first chemical networks emerged. By extension, the word is used figuratively for any self-reinforcing cycle: a market boom that attracts the investment that inflates it further, a viral trend whose spread generates ever more attention, or a social movement whose visibility recruits new supporters. The term derives from Greek roots meaning 'self' (auto-) and 'to break down' (kata-, lyein), the same roots behind catalyst. Precise and evocative, autocatalytic suits scientific writing but has become increasingly useful wherever growth feeds on its own momentum.
adjectiveDescribing a chemical reaction or process that is catalyzed by one of its own products, so the reaction accelerates itself as it proceeds. More broadly, describing any process that feeds on and amplifies its own output in a self-reinforcing cycle.
- (Chemistry) Of a reaction: catalyzed by one of its own products, causing the rate to increase as the reaction proceeds.
- (Figurative) Of a process, system, or trend: self-reinforcing and accelerating as its own output fuels further growth.
"The autocatalytic reaction sped up dramatically as more of its product accumulated."
"Once a small amount of product formed, the autocatalytic reaction raced toward completion far faster than predicted."
"Critics described the online outrage as autocatalytic — each share generated yet more content to be shared."
In an autocatalytic reaction, the product is its own spark — the reaction literally makes the thing that makes it go faster.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of autocatalytic
Autocatalytic combines Greek auto- ('self') with catalysis, a term coined in the 1830s by Swedish chemist Jöns Jacob Berzelius from Greek kata- ('down') and lyein ('to loosen or dissolve'). The adjective arose later in the nineteenth century as chemists identified reactions accelerated by their own products. It shares these roots with catalyst, catalysis, and analytic, all tracing back to the Greek verb lyein, 'to loosen.'
Related word forms
How autocatalytic is actually used
Autocatalytic is a technical term most at home in chemistry, biochemistry, and origin-of-life research; figurative use in economics, sociology, and media commentary is well established but still carries a somewhat formal, analytical register. The stress falls on the fourth syllable (-lyt-), which surprises many speakers.
Easily confused with autocatalytic
Catalytic describes speeding up a reaction by means of an external catalyst, whereas autocatalytic specifically means the reaction's own product acts as the catalyst.
Autoclastic refers to rock fragments broken by their own internal processes in geology, while autocatalytic concerns self-accelerating chemical or systemic reactions.