What does propagate mean?
Propagate means to make something spread, extend, or become known, and it is especially useful when describing the movement of ideas, rumors, diseases, signals, and physical phenomena. A person may propagate a rumor, a virus may propagate through a population, and light or sound may propagate through a material. The word can also mean to reproduce plants or other organisms from seeds, cuttings, or similar material, a use common in biology and horticulture. Its meanings range from everyday social and scientific language to more specialized descriptions of waves and transmission. Although propagate is precise and neutral in many contexts, it can sound formal when used for ordinary conversation, so spread is often the more conversational alternative. The word’s history reflects an early agricultural idea: extending a plant or its offspring to new places.
verbTo cause something to spread, extend, or become known; to transmit an idea, signal, light, sound, or other phenomenon. In biology and horticulture, it can also mean to reproduce plants or organisms from cuttings, seeds, or other material.
- To cause an idea, rumor, belief, disease, or other phenomenon to spread among people or organisms.
- To transmit or convey a signal, light, sound, heat, waves, or other physical phenomenon through a medium.
- In biology and horticulture, to reproduce plants or organisms by means such as seeds, cuttings, or other reproductive material.
- To extend, spread, or increase something, such as a belief or a characteristic, over time or through a group.
"The researchers warned that the altered virus could propagate rapidly through the population."
"The false story propagated rapidly through social media before officials issued a correction."
"Glass fibers can propagate light over long distances with very little loss."
From Latin for extending a plant by propagation, the word now describes everything from rumors and viruses to light and radio waves.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does propagate come from?
Propagate comes from Latin propagare, a verb meaning to spread, extend, or increase, especially by reproducing or extending plant material. Its development reflects the agricultural practice of extending a plant through its roots, shoots, or other parts. English borrowed the Latin word in the early 17th century, initially with agricultural meanings before it was applied more broadly to information, disease, and physical transmission.
Related word forms
How propagate is actually used
The word is common in formal and technical writing as well as ordinary speech. In medical and biological contexts, it often describes the spread of infection or the reproduction of organisms; in physics, it describes the transmission of waves or signals. In horticulture, propagation normally refers to reproducing plants intentionally rather than allowing them to spread naturally.
Easily confused with propagate
Propagate means to spread or transmit something, whereas profound means deep, significant, or intellectually serious.
Propagate means to cause something to spread, whereas predict means to state what will happen in advance.