IPA: /nɒnˈvæskjʊlər/
KK: /nɑnˈvæskjələr/
Describing organisms or structures that do not have a system of vessels for transporting fluids, such as plants that lack xylem and phloem.
Mosses are considered nonvascular plants because they do not have specialized tissues for water and nutrient transport.
Nonvascular → It is formed from "non-" (meaning not) and "vascular" (from Latin "vasculum", meaning vessel). The word "nonvascular" refers to organisms or structures that do not have vessels for transporting fluids, such as water and nutrients.
Think of 'non-' meaning 'not' and 'vascular' relating to 'vessels' — so nonvascular means not having vessels.