patera
A broad, shallow dish used for drinking, primarily in ritual contexts such as libations.
A circular ornament, resembling a dish, often worked in relief on friezes etc.
The caldera or crater (dish-shaped depression) atop a volcano, especially an extraterrestrial one; also used in the names of extraterrestrial volcanoes which have such a caldera.

paterae
plural of patera

patina
A paten, flat type of dish.
The colour or incrustation which age and wear give to (mainly metallic) objects; especially, the green rust which covers works of art such as ancient bronzes, coins and medals.
A green colour, tinted with grey, like that of bronze patina.
A gloss or superficial layer.

patinae
plural of patina

patinas
plural of patina

paua
Any of several large, edible abalones of New Zealand, especially Haliotis iris, whose shell is used to make jewelry.
The shell of this mollusc.
A fish hook made from this shell.

pauas
plural of paua

pea clam
Synonym of fingernail clam.

pea clams
plural of pea clam

pearl oyster
Any of several bivalve molluscs that are a source of pearls, but especially Pinctada margaritifera.

pearly nautilus
The chambered nautilus, Nautilus pompilius.

pecten
The bones in the hand between the wrist and the fingers.
The pubic bone.
A comb structure.
Short for pecten oculi
One of the genus Pecten of scallops.

pectens
plural of pecten

pectinolysis
The biochemical hydrolysis of pectin

pectunculi
plural of pectunculus

pectunculus
Any of the series of small longitudinal ridges on the cerebral aqueduct.

peculator
A person who peculates; an embezzler.

peculators
plural of peculator

peda
A sweet made from khoa, sugar, and various flavourings.

pedum
A shepherd's crook.

pela
Synonym of Chinese wax.

pelican's foot
Any of the Aporrhaidae family of sea snails.

pellicula
Alternative form of pellicle (“thin layer in biology etc.”).

pelliculae
plural of pellicula

pelta
A small shield, especially one of an approximately elliptical form, or crescent-shaped.
A crescent-shaped design used in mosaics.
A flat apothecium with no rim.
A crescent-shaped sheet of microtubules that encircles the base of the flagella of a protozoan.

peltae
plural of pelta

peltas
plural of pelta

pen shell
Any of the Pinnidae, a family of large saltwater clams.

pen shells
plural of pen shell

pene
Alternative spelling of peen.

penes
plural of penis
plural of pene

penna
a contour feather

pennae
plural of penna

pepla
plural of peplum

peplum
A peplos, an Ancient Greek garment formed of a tubular piece of cloth folded back upon itself halfway down so that the top of the tube is worn around the waist, and the bottom covers the legs down to the ankles; the open top is then worn over the shoulders, and draped, in folds, down to the waist. Compare the Roman palla.
A kind of women's outer garment in ancient Greece; a veil.
A short overskirt cut in such a way that the sides form points.
A short overskirt attached to the waist of a garment; a basque.

peplums
plural of peplum

peptolysis
The hydrolysis of peptones.

periboli
plural of peribolus

peribolus
Alternative form of peribolos.

peristoma
Alternative form of peristome.

peristomata
plural of peristoma

peritrochia
plural of peritrochium

perlemoen
abalone

peronaei
plural of peronaeus

peronaeus
Alternative form of peroneus.

perse
A very dark (almost black) purple or blue-gray colour.
A cloth of this colour.

perses
plural of perse

perwannas
plural of perwanna

phagolysis
The destruction of phagocytes

pholades
plural of pholas

pholas
Any of several borrowing marine bivalve molluscs of the genus Pholas.

phos
plural of pho

photoendosomolysis
endosomolysis initiated by light

phyllidia
plural of phyllidium

phyllode
A flattened petiole or leaf rachis that resembles and functions as a leaf, and may or may not be combined with an actual lamina.

physa
Any of several species of freshwater snails, included in the family Physidae.

physae
plural of physa

physas
plural of physa

piddocks
plural of piddock

piezocones
plural of piezocone

pila
plural of pilum

pilae
plural of pila

pilar
Relating to hair.
Covered in hair; hairy.

pileoli
plural of pileolus

pileolus
A little pileus.

pileworm
The teredo.

pilgrim's scallop
Synonym of pilgrim's shell.

pili
plural of pilus

pillars
plural of pillar

pilus
A hair.
A hairlike appendage found on the cell surface of many bacteria.
A bacterial protein that has several biochemical functions.

pimpleback
Quadrula pustulosa, an American freshwater mussel.

pimplebacks
plural of pimpleback

pina
Alternative form of piña.

pinas
plural of pina

pinna
The visible part of the ear in most therians that resides outside of the head, the auricle; outer ear excluding the ear canal.
A leaflet or primary segment of a pinnate compound leaf.
A feather, wing, fin, or other similar appendage.

pinnae
plural of pinna

pinnas
plural of pinna

pintada
A female guinea fowl.

pintadas
plural of pintada

placenta
An organ in most mammals during gestation that supplies food and oxygen to the foetus and passes back waste. It is on the wall of the uterus and links to the foetus through the umbilical cord. It is expelled after birth.
In flowering plants, the part of the ovary where ovules develop; in non-flowering plants where the spores develop.

placentae
plural of placenta

placentaria
plural of placentarium

placentarium
Synonym of placenta.

placentas
plural of placenta

planorbis
Any of the freshwater air-breathing mollusks belonging to Planorbis and allied genera, having shells of a discoidal form.

planorbises
plural of planorbis

plasminolysis
The breakup of blood clots by plasmin

plastoglobuli
plural of plastoglobule

plastoglobulus
Alternative form of plastoglobule.

pocketbook
A purse or handbag.
A wallet for paper money.
One's personal budget or financial capacity; the amount one can afford.
A small book, particularly (US) a paperback or (UK) notebook able to fit into a pocket (of any genre, from reference work to fine art).
A small book, particularly (US) a paperback or (UK) notebook able to fit into a pocket (of any genre, from reference work to fine art).

pocketbooks
plural of pocketbook

polonchay
Chinese spinach

polycylinder
A higher dimensional generalization of a cylinder.

polypi
plural of polypus

polypus
A medical phenomenon.
A medical phenomenon.
An aquatic creature.
An aquatic creature.

polypuses
plural of polypus

pond snails
plural of pond snail

pondhorn
Any unionid of the genus Uniomerus

pondhorns
plural of pondhorn

poppycocks
plural of poppycock

postchorus
Alternative form of post-chorus.

preparacrista
A crista directed anteriorly from the vicinity of the paracone apex, confluent with the precingulum.

preparacristas
plural of preparacrista

prespike
A presynaptic spike

prespikes
plural of prespike

procerites
plural of procerite

prologomenon
Misspelling of prolegomenon.

propanolysis
alcoholysis using propanol

propterygia
plural of propterygium

proskynetarion
an object of religious reverence

proskynitarion
Alternative form of proskynetarion.

protenema
Alternative form of protonema.

protenemata
plural of protenema

protolyses
plural of protolysis

protolysis
Any proton-transfer reaction

protoma
Alternative form of protome.

protomas
plural of protoma

protonema
A filament of cells that forms following the germination of the spores of mosses and liverworts

protonemata
plural of protonema

provocator
One who engages in provocation.

provocators
plural of provocator

pseudoacini
plural of pseudoacinus

pseudoacinus
A disrupted or distorted form of an acinus

pseudoblepsia
pseudoblepsis

psycholysis
psycholytic therapy

pteria
plural of pterion

pterioid
Any marine bivalve of the superfamily Pterioidea

pteropods
plural of pteropod

pterygia
plural of pterygium

puha
Any of various Eurasian sowthistles of the genus Sonchus, used as a vegetable by Māori people; especially the prickly sowthistle, Sonchus asper.

pulsella
plural of pulsellum.