phlyctaeniid
Any placoderm in the family Phlyctaeniidae.

phlyctaeniids
plural of phlyctaeniid

phoebodontid
Any elasmobranch of the family †Phoebodontidae.

phoront
Any organism that attaches itself to another in order to travel.

phoronts
plural of phoront

phosphoreceptor
A receptor for phosphorylated species

phosphoreceptors
plural of phosphoreceptor

photobacteria
plural of photobacterium

photobacterium
Any of the genus Photobacterium of bioluminescent bacteria.

photochromogen
A microorganism (especially a mycobacterium) whose pigmentation develops following exposure to light.

photochromogens
plural of photochromogen

photodetachment
The absorption of a photon and subsequent elimination of an electron from an anion to form a neutral species.

photodetachments
plural of photodetachment

photogenesis
The emission of light, as by certain bacteria.

photoionisation
The ejection of electrons from an atom or other species following the absorption of photons.

photoionisations
plural of photoionisation

photoionization
Alternative spelling of photoionisation.

photoionizations
plural of photoionization

photooxidation
The loss of an electron from a photoexcited species.
The reaction of something with oxygen in the presence of light.

photooxidations
plural of photooxidation

photophile
Any organism that thrives in bright sunlight.

photophiles
plural of photophile

photoquadrat
A quadrat that is photographed for later analysis of species content

photoquadrats
plural of photoquadrat

photoreduction
The addition of an electron to a photoexcited species.
Any reduction reaction that takes place in the presence of light.

photoreductions
plural of photoreduction

photosensitiser
Alternative form of photosensitizer.

photosensitisers
plural of photosensitiser

photosensitizer
A molecular or atomic species that initiates a photochemical reaction

photosensitizers
plural of photosensitizer

phyllobothriid
Any tapeworm of the family Phyllobothriidae

phyllobothriids
plural of phyllobothriid

phyllocarid
Any crustacean of the subclass Phyllocarida.

phyllocarids
plural of phyllocarid

phyllolepidid
Any phyllolepid placoderm of the family Phyllolepididae

phyllolepidids
plural of phyllolepidid

phyllopod
Any of several branchiopod crustaceans whose appendages resemble leaves

phylloscopid
Any of the warblers in the family Phylloscopidae.

phylloscopids
plural of phylloscopid

phylloxerid
Any hemipteran of the family Phylloxeridae

phylloxerids
plural of phylloxerid

phylogeneses
plural of phylogenesis

phylogenesis
Evolutionary development of a species.

phylogenics
phylogeny
phylogenetics

phylogenies
plural of phylogeny

phylogeny
The evolutionary history of groups of organisms, such as species or clades.
A phylogenetic diagram.
The historical development of a human social or racial group.
The historical development of any thing, idea, etc.

phylomitogenome
The mitogenome of a specific phylum or species

phylomitogenomes
plural of phylomitogenome

phylomorphospace
A graphical representation of the morphology of a group of related species

phylomorphospaces
plural of phylomorphospace

phylostratification
stratification by species

phylostratigraphy
The stratigraphy of species and their genetic evolution

phylotranscriptome
The transcriptome of a specific phylum or species

phylotranscriptomes
plural of phylotranscriptome

physiotype
Any of a set of people or organisms that have a particular set of physical features

physiotypes
plural of physiotype

physonect
Any siphonophore of the suborder Physonectae

physonects
plural of physonect

phytodepuration
The purification of surface water by means of bacteria on the roots of plants

phytoextractor
Any organism that performs phytoextraction.

phytoextractors
plural of phytoextractor

phytoflagellate
Any dinoflagellate of the class Phytomastigophorea.

phytoflagellates
plural of phytoflagellate

phytomastigophorean
Any protozoon in the class Phytomastigophorea.

phytomonad
Any trypanosomatid of the genus Phytomonas

phytomonads
plural of phytomonad

phytonematode
Any nematode that lives on a plant

phytonematodes
plural of phytonematode

phytopathogen
Any organism that is pathogenic to plants

phytopathogens
plural of phytopathogen

phytophagan
Any organism that eats plants.

phytophagans
plural of phytophagan

phytoplanktivore
Any organism that consumes phytoplankton

phytoplasma
Any of various specialized bacteria that are obligate parasites of plant phloem tissue and of some insects, characterized by the lack of a cell wall, a pleiomorphic or filamentous shape (normally with a diameter of less than one micrometer), and their very small genomes.

phytoplasmas
plural of phytoplasma

picoautotroph
A microscopic autotroph

picoautotrophs
plural of picoautotroph

picodicistrovirus
Any dicistrovirus of the genus Dicipivirus

picodicistroviruses
plural of picodicistrovirus

picophototroph
a picoscale phototroph

picophototrophs
plural of picophototroph

picozoan
Any unicellular eukaryote of the phylum Picozoa

picozoans
plural of picozoan

pilciloricid
Any loriciferan in the family Pilciloricidae.

pillworm
Any myriapod which rolls up for protection; a galleyworm.

pillworms
plural of pillworm

pilosaurid
Any of the family Pliosauridae of extinct marine reptiles.

pilosaurids
plural of pilosaurid

pinaster
The maritime pine (species Pinus pinaster), that grows in southern Europe.

pinasters
plural of pinaster

pineaster
Archaic form of pinaster.

pineasters
plural of pineaster

pinnid
Any pen shell in the family Pinnidae.

pinnids
plural of pinnid

pintano
Abudefduf saxatilis, a species of damselfish.

pintanos
plural of pintano

piretelline
A foraminifer of the family Pirellinae.

piretellines
plural of piretelline

piroplasmid
Any of the order Piroplasmida of protozoan parasites.

piroplasmids
plural of piroplasmid

piteira
Mauritius hemp, of the species Furcraea foetida.

pitpit
Saccharum edule, a species of sugarcane.

placodontid
Any placodont in the family Placodontidae.

placodontids
plural of placodontid

plagiogrammacean
Any diatom of the family Plagiogrammaceae

plagiogrammaceans
plural of plagiogrammacean

plagiorchiid
Any trematode of the order Plagiorchiida

plagiorchiids
plural of plagiorchiid

plagiosaur
Any of the superfamily Plagiosauroidea of stereospondyl temnospondyls that lived during the Triassic period.

plagiosaurid
Any temnospondyl of the family Plagiosauridae.

plagiosaurids
plural of plagiosaurid

plagiosaurs
plural of plagiosaur

plamid
Misspelling of plasmid.

planarian
Any of various flatworms of the order Tricladida living in marine, freshwater, or terrestrial environments.

planarians
plural of planarian

planctomycete
Any of many aquatic bacteria of the phylum Planctomycetes.

planctomycetes
plural of planctomycete

planktonivore
Any organism that feeds on plankton

planktonivores
plural of planktonivore

planktotroph
Any organism that feeds on plankton

planktotrophs
plural of planktotroph

planocraniid
Any crocodylian of the family Planocraniidae.

planocraniids
plural of planocraniid

plantagonine
A base closely related to indicaine, found in Plantago species.

plantarenaloside
An iridoid found in the genus Psyllium.

planulinid
A foraminifer of the family Planulinidae.

planulinids
plural of planulinid

plasmid
A loop of double-stranded DNA that is separate from — and replicates independently of — the chromosomes; such loops are most commonly found in bacteria, but they are also sometimes found in archaeans and eukaryotic cells, and they are used in genetic engineering as a vector for gene transfer.

plasmids
plural of plasmid

plasmodiophore
Any of a group of obligate endoparasitic protists of the subphylum Endomyxa in phylum Cercozoa, taxonomically united under the family Plasmodiophoridae.

plasmodiophores
plural of plasmodiophore.

platyzoan
Any protostome of the clade Platyzoa

platyzoans
plural of platyzoan

plesiopid
Any longfin in the family Plesiopidae.