What does anastomose mean?
To anastomose is to form a crosswise connection between vessels, channels, or branching structures so that they intercommunicate — most familiar from anatomy, where arteries, veins, and nerves naturally join to create alternate pathways for blood or signals. Surgeons deliberately create such junctions when grafting tissue or bypassing blockages, and the term extends beyond medicine: geologists describe braided river systems whose channels anastomose across a floodplain, while botanists apply it to leaf veins and fungal threads that interweave. The word derives ultimately from the Greek roots ana- ('up, back') and stoma ('mouth'), evoking openings joined mouth to mouth. Though chiefly technical and formal in register, anastomose offers a precise way to describe any network of interconnected passages, and its companion noun, anastomosis, is a staple of medical vocabulary.
verb(of vessels, channels, or streams) to join or connect by crosswise links so that they intercommunicate. In anatomy and medicine, refers to the natural surgical or physiological connection between blood vessels, nerves, or other tubular structures.
- (Of anatomical structures such as blood vessels or nerves) to open into or join each other by crosswise connections, allowing flow between them.
- (General/rare) Of channels, rivers, or branching networks, to link together through connecting passages.
"The surgeon grafted the vein so that it would anastomose with the adjacent artery."
"In a healthy heart, small arteries anastomose freely, providing backup routes for blood if one vessel becomes blocked."
"The delta's distributaries repeatedly anastomose, weaving a braided network across the plain."
Your body contains countless natural shortcuts where blood vessels merge and reroute around blockages — and 'anastomose' is the verb that names this biological plumbing trick.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of anastomose
Anastomose comes from Greek: the prefix ana- meaning 'up' or 'back', combined with stoma, meaning 'mouth', originally describing openings joined as if mouth to mouth. The related noun anastomosis was adopted into scientific Latin and entered English medical usage in the early modern period, with the verb form following as anatomical writing developed. It shares its root stoma with words such as stoma and stomata, used in botany for the pores on leaf surfaces.
Related word forms
How anastomose is actually used
Primarily a technical term used in anatomy, surgery, botany, mycology, and geology; rare in everyday speech. The noun form 'anastomosis' (plural 'anastomoses') is more commonly encountered in medical writing than the verb.
Easily confused with anastomose
Anastomose is the verb describing the act of connecting; anastomosis is the noun naming the resulting connection itself.