phylum


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

phylum

 [fi´lum] (pl. phy´la) (L., Gr.)
a primary division of the plant or animal kingdom, including organisms that are assumed to have a common ancestry.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

phy·lum

, pl.

phy·la

(fī'lŭm, fī'lă),
A taxonomic division below the kingdom and above the class.
[Mod. L. fr. G. phylon, tribe]
Farlex Partner Medical Dictionary © Farlex 2012

phylum

(fī′ləm)
n. pl. phy·la (-lə)
1. Biology A taxonomic category of organisms ranking below a kingdom and above a class. In the classification of plants, division often replaces phylum.
2. Linguistics A large division of possibly genetically related families of languages or linguistic stocks.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

phy·lum

, pl. phyla (fī'lŭm, -lă)
A taxonomic division below the kingdom and above the class.
[Mod. L. fr. G. phylon, tribe]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

phylum

The taxonomic group below kingdom and above class.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

phylum

(pl. phyla) a major grouping (TAXON) into which kingdoms (e.g. the animal kingdom), are divided and which is composed of a number of CLASSES.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
The Families Trichuridae and Ancylostomatidae and the Phylum Acanthocephala are also among the endoparasites most frequently found in other studies (see Table 2).
Other lower resolution studies find that the relative abundance of bacteria from the phylum Bacteroidetes decreases as those from the phylum Proteobacteria increase and that individuals with cirrhosis exhibit a unique increase in Fusobacteria (Chen et al.
A study in genetically obese and lean mice (ob/+, +/+) found that although Firmicutes was the dominant phylum in both mice strains, compared to lean mice, genetically obese mice had 50% less of the Bacteroidetes population and a higher Firmicutes population (19).
Asterisked (*) taxa are new records for Estonia Taxon Vortsjarv Saadjarv Phylum Amoebozoa Class Lobosea Order Arcellinida Arcella sp.
The phylum Actinobacteria was the second superseding phylum in rhizosphere library of Fareed-06 consisted of 20% of total clones obtained from rhizosphere library but the %age allocation of members of this phylum was highest in the rhizosphere soil of Chakwal-50 then other phyla shared 27% of total clones.
nov., a new member of the phylum Bacteroidetes and allocation of the genera Chitinophaga, Sediminibacterium, Lacibacter, Flavihumibacter, Flavisolibacter, Niabella, Niastella, Segetibacter, Parasegetibacter, Terrimonas, Ferruginibacter, Filimonas and Hydrotalea to the family Chitinophagaceae fam.
A crown group phylum is composed of all the living organisms assigned to that phylum, plus all the extinct organisms that were descended from the common ancestor of those living organisms.
This phylum was followed by other abundant phyla such as Proteobacteria, Chloroflexi, Verrucomicrobia, Gemmatimonadetes, and Actinobacteria.
Deltaproteobacteria was the largest class in the phylum, with 1627 sequences (28.9% of the proteobacteria).
"The colonisation of this phylum was delayed by up to one year for some infants.
In the phylum Brachiopoda (lamp shells), which is an important phylum for evolutional studies, the C value of only 2 species have been estimated (Britten & Davidson 1971, Cohen & Gawthrop 1997).