Definition & Meaning of "saprophyte"in English

What is the origin of the term "saprophyte" and how is it used?

"Saprophyte" is a term borrowed from biology, where it describes organisms that feed on decaying matter, and it entered English figurative use in the 19th–20th centuries to describe a person who lives off decay, waste, or exploits others without contributing. The metaphor draws on the biological process of decomposition to highlight parasitic, unproductive, or morally idle behavior. It is used in literature, social commentary, and informal speech to criticize laziness, opportunism, or exploitation. The term is clearly derogatory, emphasizing contempt for someone's dependency or lack of contribution.