IPA: /ˌɛkstrəˈvæskjʊlər/
KK: /ɛkstrəˈvæskjələr/
Describing something that is located outside of blood or lymph vessels.
The extravascular space is important for the exchange of fluids in the body.
Extravascular is formed from "extra-" (meaning outside) and "vascular" (from Latin "vasculum", meaning vessel). The word describes something that is located outside of blood vessels or lymphatic vessels.
Think of 'extra-' meaning 'outside' and 'vascular' relating to 'vessels' — so extravascular refers to something that is outside the vessels.