| PHY | (biology) the sequence of events involved in the evolutionary development of a species or taxonomic group of organisms |
|---|---|
| PHY | (biology) the major taxonomic group of animals and plants |
| PHY | (linguistics) a large group of languages that are historically related |
| PHY | phylum or class of elongated wormlike parasites that live in the intestines of vertebrates: spiny-headed worms |
| PHY | segmented worms: earthworms |
| PHY | jointed-foot invertebrates: arachnids |
| PHY | unsegmented worms: roundworms |
| PHY | marine invertebrates that resemble mollusks |
| PHY | marine or freshwater animals that form colonies of zooids |
| PHY | arrowworms: a group of small active transparent marine worms |
| PHY | comprises true vertebrates and animals having a notochord |
| PHY | hydras |