1. The act of excreting matter from the animal system; that which is excreted.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• expresion,
• excretia,
• excrusion,
• excpeption,
• execretion,
• excpection,
• excution,
• expretion,
• excception,
• extrution,
• exrection,
• extrotion,
• exclution,
• excemtion,
• excertion,
• excption,
• excaption,
• exprestion,
• excultion,
• excetion

• excreta,
• exertion,
• excretory,
• excrete,
• exaeretodon,
• excreting.

The adjective form of the word "excretion" is "excretory".

The plural of the "excretion" can be the "excretions".

The singular of the "excretion" can be the "excretion".