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| a widely distributed group of photosynthetic prokaryotic organisms, resembling phototrophic bacteria, occurring in diverse habitats |
| the compact area of a nerve cell that constitutes the nucleus and surrounding cytoplasm, excluding the axons and dendrites |
| subclass (ˈsʌbˌklɑːs) | |
| —n | |
| 1. | a principal subdivision of a class |
| 2. | biology a taxonomic group that is a subdivision of a class |
| 3. | maths another name for subset |
| —vb | |
| 4. | (tr) to assign to a subclass |
subclass sub·class (sŭb'klās')
n.
A taxonomic category of ranking between a class and an order.
| subclass (sŭb'klās') Pronunciation Key
A taxonomic category of related organisms ranking below a class and containing one or more orders. |