| n. | 1. | (Zool.) One of the larger divisions of the animal kingdom; a branch; a grand division. |
| 2. | (Biol.) A series of animals or plants genetically connected. |
| Noun | 1. | phylum - (linguistics) a large group of languages that are historically related |
| 2. | phylum - (biology) the major taxonomic group of animals and plants; contains classes |