What does coagulable mean?
Coagulable is a technical adjective describing something—typically a liquid—that is capable of coagulating, that is, of changing from a fluid state into a thickened, clotted, or semi-solid mass. Blood, milk, egg whites, and various protein solutions are classic examples of coagulable substances, and the word appears most often in medical, biochemical, and older chemical texts: one might speak of coagulable plasma, coagulable lymph, or testing whether a sample remains coagulable. The term emphasizes potential rather than outcome; a coagulable liquid may never actually clot unless the right conditions or agents are present. Neutral and clinical in tone, the word is rarely used in casual conversation, where verbs like 'clot,' 'curdle,' or 'set' do the work instead. It derives from the Latin coagularis ('to curdle'), ultimately from agere ('to drive'), sharing ancestry with coagulate and coagulation. Its enduring value lies in precision: whenever a scientific description requires distinguishing liquids that can clot from those that cannot, coagulable supplies exactly that distinction.
adjectiveCapable of being converted from a liquid into a thickened, semi-solid mass or clot; especially of a liquid such as blood that can coagulate.
- (Of a liquid, especially blood, milk, or protein solutions) able to be caused to coagulate or clot.
"The physician noted that the patient's blood remained normally coagulable despite the medication."
"The laboratory tested whether the plasma sample was coagulable before proceeding with the assay."
"Milk is naturally coagulable, which is why rennet can transform it into cheese."
Every time your blood clots over a cut, it's proving itself coagulable — a word descended from the same Latin root that gave us 'cogent', because a clot is literally what has been 'driven together.'
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of coagulable
Coagulable comes from Latin coagulabilis, derived from coagulare, meaning 'to curdle,' itself formed from coagulum ('a curd' or 'clot'). Coagulum traces back further to cogere, 'to drive or bring together,' from com- ('together') plus agere ('to drive'), making the word a distant cousin of 'cogent' and 'agent.' The English adjective was adopted in the early modern period, likely in the 17th century, within medical and alchemical-chemical writing. Its closest relatives are coagulate, coagulation, coagulant, and coagulum, all built on the same Latin stem.
How coagulable is actually used
Coagulable is a technical term found chiefly in scientific, medical, and older chemical writing. It describes the potential to coagulate rather than an already-coagulated state, and it carries a neutral, clinical connotation rather than any emotional coloring. In everyday speech, speakers almost always reach for 'coagulate' or 'clot' instead.
Easily confused with coagulable
Coagulase is a noun for an enzyme produced by some bacteria that causes blood plasma to clot, whereas coagulable is an adjective describing any substance able to clot or curdle.