IPA: /nəˈfrɪdiəl/
KK: /nɛˈfrɪdiəl/
Related to a type of excretory organ found in some invertebrates, which helps in the removal of waste from the body.
The nephridial system in earthworms plays a crucial role in their excretion process.
Nephridial is formed from "nephros" (meaning kidney) and the suffix "-idial" (related to or pertaining to). The word refers to something that is related to or pertaining to the kidneys.
Think of 'nephros' which means kidney, and remember that 'nephridial' relates to the kidneys.