phototroph

This term is a technical classification used primarily in microbiology and biochemistry to categorize organisms based on their energy source. It is a neutral, scientific descriptor that focuses on the metabolic capability of an organism rather than its taxonomic group, meaning it can encompass plants, algae, and certain bacteria.

In academic writing, it is often contrasted with heterotrophs, which obtain energy from organic compounds, or chemotrophs, which derive energy from chemical reactions. The term is strictly used in biological and ecological contexts and is not found in casual conversation.