piperidine
An alicyclic heterocycle, containing 5 carbon atoms and one nitrogen atom, formally derived by the hydrogenation of pyridine; many of its derivatives are alkaloids or pharmaceuticals

piperidineamine
Any of three isomeric primary amines derived from piperidine

piperidineamines
plural of piperidineamine

piperidines
plural of piperidine

piperidinoanthraquinone
Any piperidine derivative of anthraquinone.

piperidinoanthraquinones
plural of piperidinoanthraquinone

piperidinone
Any of three isomeric ketones derived from piperidine.

piperidinones
plural of piperidinone

piperidinyloxy
An N-oxygen free radical derived from piperidine

piperitol
The monoterpenoid 6-isopropyl-3-methyl-2-cyclohexen-1-ol or an isomer

piperitols
plural of piperitol

piperizine
Misspelling of piperazine.

piperolide
The lactone (5E)-4-methoxy-5-[(E)-1-methoxy-3-phenylprop-2-enylidene]furan-2-one or any related compound

piperolides
plural of piperolide

piperonal
The methylene ether of 3,4 dihydroxy benzaldehyde; used in perfume to give a floral note

piperonylonitrile
A chemical compound containing piperonyl linked to a nitrile functional group.

piperonylonitriles
plural of piperonylonitrile

pipoxizine
A histamine 1 receptor antagonist.

pipradrol
A mild central nervous system stimulant.

piprinhydrinate
A histamine 1 receptor antagonist.

piragliatin
An enzyme inhibitor.

pirandamine
A tricyclic SSRI, structurally related to tandamine.

piricyclamide
Any of a group of prenylated cyclic peptides in cyanobacteria of the genus Microcystis.

piricyclamides
plural of piricyclamide

pirimiphos
Any of a family of phosphorothioate insecticides

pirk
A type of fishing lure consisting of a metal bar with a treble hook attached.

pirks
plural of pirk

pirnabine
A synthetic cannabinoid receptor ligand, developed for the treatment of glaucoma.

pirolazamide
An antiarrhythmic agent.

piscicide
Any substance that is poisonous to fish.
The killing of fish.
A fish that kills.
A fish that kills another fish, especially out of malice.

piscicides
plural of piscicide

piscidin
Any of a group of antimicrobial peptides present in fish

piscidins
plural of piscidin

pisoid
A concretionary grain, typically of calcium carbonate, between a microid and a macroid in size.

pisoids
plural of pisoid

pisolith
A pisoid.
A pisolite.

pisspool
A contemptible place or situation; a pisspot.

pisspools
plural of pisspool

pitchiness
blackness, as of pitch; darkness
The state of being pitchy, or off-pitch

pitchout
A pitch that is intentionally thrown high and outside of the strike zone in order to prevent a stolen base

pitchouts
plural of pitchout

pitchstone
a natural glass, rich in microscopic crystallites, formed by the rapid cooling of lava or magma

pitchstones
plural of pitchstone

pitcoal
Coal from a pit: mineral coal mined from a mine, as opposed to charcoal or seacoal.

pithoi
plural of pithos

pithos
A large ceramic jar used by certain ancient civilizations that bordered the Mediterranean.

pitiamide
Any of a group of chlorolipid amides isolated from marine cyanobacteria

pitiamides
plural of pitiamide

pitolisant
A histamine receptor antagonist 1-[3-[3-(4-chlorophenyl)propoxy]propyl]piperidine

pituitrin
An extract of bovine posterior pituitary hormones (i.e. oxytocin and vasopressin) formerly used in obstetrics to induce labour and to treat postpartum haemorrhage.

pivaloyl
The radical derived from pivalic acid

pivaloyloxymethyl
A protecting group, (CH₃)₃C-CO-O-CH₂, used in organic synthesis and to produce prodrugs.

pivaloyls
plural of pivaloyl

pivalylbenzhydrazine
A hydrazine derivative and monoamine oxidase inhibitor.

piwi
A class of genes originally identified as encoding regulatory proteins responsible for maintaining incomplete differentiation in stem cells and maintaining the stability of cell division rates in germline cells.
a small Australian magpie lark, also known as a Murray magpie.

piwis
plural of piwi

pixantrone
A particular immunosuppressant.

pizotyline
pizotifen

placcy
plastic

placebome
A group of genes thought to affect an individual's response to placebo medication.

placebomes
plural of placebome

plackstrin
Misspelling of pleckstrin.

placky
Alternative form of placcy.

pladienolide
Any of a family of macrocyclic lactones, isolated from Streptomyces platensis, that exhibit antitumor activity

pladienolides
plural of pladienolide

plafibride
A particular antilipidemic and antiplatelet drug.

plafond
A ceiling, especially one that is ornately decorated.
A painting or decoration on a ceiling.
The tibial plafond.

plafonds
plural of plafond

plakophilin
Any of a family of proteins, found in the cytoskeleton, that are essential for the formation and stabilization of desmosomal cell contacts.

plakophilins
plural of plakophilin

plakous
A flatbread, of Ancient Greek origin, thought to be a precursor of pizza.

plaminogen
Misspelling of plasminogen.

planchet
A flat disk of metal used as a blank for stamping a coin.

planchets
plural of planchet

planktocyclin
A cyclooctapeptide protease inhibitor produced by the cyanobacterium Planktothrix rubescens

planoblast
Any free-swimming gonophore of a hydroid; a hydroid medusa.

planoblasts
plural of planoblast

planosol
A soil with a light-coloured, coarse-textured surface horizon that shows signs of periodic water stagnation and abruptly overlies a dense, slowly permeable subsoil with significantly more clay than the surface horizon.

planosols
plural of planosol

plantacyanin
phytocyanin

plantacyanins
plural of plantacyanin

plantaricin
Any of a class of bacteriocins produced by the bacterium Lactobacillus plantarum.

plantaricins
plural of plantaricin

plantstuff
Any material obtained from plants.

plantstuffs
plural of plantstuff

plaquette
A small metal tablet decorated in bas-relief, usually with a design including figures.
The smallest closed loop, enclosing the region between four lattice sites, in lattice gauge theory.

plaquettes
plural of plaquette

plarn
Plastic yarn made from strips of plastic bags.

plasmamembrane
Alternative form of plasma membrane.

plasmamembranes
plural of plasmamembrane

plasmanyl
Any radical derived from a plasmanic acid

plasmanyls
plural of plasmanyl

plasmata
plural of plasma

plasmatosome
Synonym of plasome.

plasmatosomes
plural of plasmatosome

plasmenyl
Any radical derived from a plasmenic acid

plasmenyls
plural of plasmenyl

plasmepsin
Any of a class of aspartic acid protease enzymes produced by the plasmodium parasite.

plasmepsins
plural of plasmepsin

plasminogen
The inactive precursor to plasmin; profibrinolysin

plasminogens
plural of plasminogen

plasmogen
The important living portion of protoplasm, considered a chemical substance of the highest elaboration.
Misspelling of plasminogen.

plasome
A hypothetical unit of protoplasm; the smallest possible particle of protoplasm, further division of which would destroy its structure and necessitate chemical change.

plasomes
plural of plasome

plasticard
Thin polystyrene sheets used in arts and crafts.

plasticene
Alternative form of plasticine.

plasticenes
plural of plasticene

plasticine
Modeling clay.

plasticines
plural of plasticine

plasticiser
Alternative spelling of plasticizer.

plasticisers
plural of plasticiser

plasticizer
Any of various substances added to a material (such as plastic or concrete) in order to make it more pliable.

plasticizers
plural of plasticizer

plasticrete
A durable construction material.

plasticuffs
plastic handcuffs

plastidule
One of the small particles or organic molecules of protoplasm.

plastidules
plural of plastidule

plastifier
A chemical agent that causes other chemical compounds to react to form a plastic.
A chemical compound added to a polymer in order to produce a softer plastic material.

plastifiers
plural of plastifier

plastiglass
A clear material combining the characteristics of plastic and glass.

plastilina
plasticine