What does constrictor mean?
A constrictor is an agent of compression: most famously, a large snake such as a boa or python that subdues prey not with venom but by coiling around it and squeezing tighter each time the animal exhales. The word also has a precise anatomical meaning, naming muscles that narrow an opening or passage — for example, the pharyngeal constrictors in the throat. Less frequently, constrictor is used figuratively for anything that binds, limits, or chokes off growth or movement. Derived from the Latin verb constringere, meaning to bind tightly, the term carries an inherent sense of forceful narrowing. Its everyday familiarity rests largely on the boa constrictor, one of the best-known snakes in the world, while its technical senses give it standing in medicine, zoology, and descriptive writing.
A snake, such as a boa or python, that kills its prey by coiling around it and squeezing.
"The python is a powerful constrictor capable of taking surprisingly large prey."
An anatomical muscle that narrows an opening or passage in the body.
"The superior pharyngeal constrictor helps move food toward the esophagus."
Standard plural; used both for multiple snakes and for multiple anatomical muscles.
"Constrictors rely on ambush tactics rather than speed to catch their prey."
A boa constrictor doesn't crush its prey to death — it tightens its coils each time the animal exhales, until it can no longer breathe.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of constrictor
Constrictor comes from the Latin verb constringere, formed from com- ('together') plus stringere ('to bind tight'), giving the sense 'to bind or draw together.' It entered English in the early modern period, initially used for anything that compresses, before becoming firmly associated with snakes that kill by squeezing. Cognates sharing the same Latin root include constrict, constriction, and restrictive.
How constrictor is actually used
Most commonly encountered in 'boa constrictor,' referring to the well-known snake species. In medical and anatomical contexts, it refers to muscles that narrow openings or passages. The figurative sense — describing something that restricts or constrains — is less common but appears in literary or rhetorical use.
Easily confused with constrictor
A restriction is a rule or limit placed on something, while a constrictor is an agent — usually a snake or muscle — that physically squeezes or narrows.