pyramidion
The small pyramid which crowns or completes an obelisk or pyramid.

pyramidions
plural of pyramidion

pyramidisation
Alternative form of pyramidization.

pyramidism
classification into a rigid hierarchy, as of the sciences
Synonym of pyramidology (“the study of pyramids from a supernatural or new-age perspective”).

pyramidization
The process, or the result of pyramidizing

pyramidoid
A solid resembling a pyramid.

pyramidoids
plural of pyramidoid

pyramidology
The study of pyramids (especially the Egyptian pyramids) from a supernatural or new-age perspective, rather than the historical or archaeological viewpoint.

pyramidotomies
plural of pyramidotomy

pyramidotomy
cutting of a pyramidal tract (as a treatment for parkinsonism)

pyramoid
Alternative form of pyramidoid.

pyramoids
plural of pyramoid

pyranometry
measurement with a pyranometer

pyretotherapy
pyrotherapy

pyrgology
The study of towers.

pyrheliometry
The study (and measurement) of solar radiation using a pyrheliometer.

pyridoxylation
reaction with a pyridoxyl group

pyridyl
Any of three isomeric univalent radicals, C₅H₄N-, derived from pyridine; analogous to phenyl.

pyridylamination
Reaction with a pyridylamino group

pyridylazo
Any of three isomeric univalent azo radicals derived from pyridine, C₅H₄N-N==N-, having the azo group in the 2-, 3- or 4- position

pyridylazos
plural of pyridylazo

pyridyls
plural of pyridyl

pyrimidone
Either of two heterocyclic compounds, with chemical formula C₄H₄N₂O, whose derivatives are the basis of many other biological molecules.

pyrimidones
plural of pyrimidone

pyritization
The hydrothermal process whereby a rock is transformed into a pyrite.

pyritizations
plural of pyritization

pyroanthocyanin
A type of anthocyanin found in Monnina obtusifolia.

pyrobology
pyroballogy

pyroceram
a form of pyrex

pyroclimate
A hot, dry climate in which fires are common

pyroclimates
plural of pyroclimate

pyroconductivity
electrical conductivity elicited in a solid by heating

pyroconvection
Convection caused or intensified by a fire.

pyroconversion
A dry heat treatment of starch, causing dextrinization.

pyroculture
The use of controlled burning, chiefly by hunter-gatherers, as a form of ecological engineering to manage plant and animal distribution in a habitat.
The culture and technology developed through the domestication of fire by early humans.
Slash and burn.

pyrocumuli
plural of pyrocumulus

pyrocumulus
A dense cloud associated with fire or volcanic activity.

pyrodiversity
A variation in the kinds of fire, whether produced by natural conditions or controlled burning, in an environment or ecosystem.

pyroelectricity
The generation of electric charge as a result of a change in temperature.

pyroelectrodynamics
The use of pyroelectric forces to move streams of liquids, especially in order to form patterns of very small spots

pyrogasification
Combined pyrolysis and gasification.

pyrogenicities
plural of pyrogenicity

pyrogenicity
The condition or extent of being pyrogenic.

pyrogeography
The geographical study of the spread of fire

pyroglutamylation
Any reaction in which a pyroglutamyl group is added, typically by means of a derivative of pyroglutamic acid

pyroglutamylations
plural of pyroglutamylation

pyrogravure
pyrography
A design or picture made by pyrography.

pyrogravures
plural of pyrogravure

pyrokinesis
The ability to set objects or people on fire or to supernaturally project fire from one's own being through the concentration of psychic power; the power to control fire.

pyrolatry
the worship of fire

pyroluminescence
luminescence produced by high temperature (typically, in a flame)

pyromachy
The use of fire in combat.

pyromagnetism
The variation of magnetic field with temperature; the condition of becoming magnetic when heated.

pyrometallurgies
plural of pyrometallurgy

pyrometallurgy
Any process that uses high temperatures to transform either metals or their ores.

pyrometamorphism
A type of metamorphism in which rocks are changed by heat from burning fossil fuel.

pyrometry
The measurement of high temperatures.

pyronecrosis
A variant of pyroptosis that requires a caspase.

pyronomics
The science of heat; thermodynamics.

pyropheophorbide
Any of a group of breakdown products of pheophorbides that retain a porphyrin ring system

pyropheophorbides
plural of pyropheophorbide

pyrophilia
A paraphilia in which gratification is derived from fire and fire-starting activity.

pyrophobia
An fear or hatred of fire or flames.

pyrophoricity
The state of being pyrophoric.

pyrophosphorylation
The act, or the result of pyrophosphorylating

pyrophosphorylations
plural of pyrophosphorylation

pyrophotography
Any photographic process involving the use of heat to fix the picture.

pyroplasticity
The condition of being pyroplastic.

pyroprobe
A kind of pyrolyser based on resistive heating, used in mass spectrometry.

pyroprobes
plural of pyroprobe

pyrosol
A method to apply a thin coating by pyrolysis of an aerosol.

pyrosophy
pyrology

pyrosynthesis
synthesis by the application of heat

pyrotag
A sequence derived from 454 pyrosequencing of PCR-based small subunit ribosomal RNA amplicons.

pyrotags
plural of pyrotag

pyrotechnics
The art and technology of fireworks and related military applications.
A display of fireworks.
An impressive display.

pyrotechnology
The technology of pyrotechnics

pyrotechny
The manufacture and use of fireworks.
Impressive, dazzling or virtuosic display.
The use of fire in chemistry and metallurgy.
The manufacture and use of gunpowder, bombs etc.

pyrotheology
An interpretation that views faith as a particular way of engaging with the world rather than a set of beliefs about the world.

pyrrocidine
Any of a group of bioactive natural products.

pyrryl
Any of three univalent radicals, C₄H₄N, formally derived from pyrrole by the loss of a hydrogen atom.

pysanky
plural of pysanka

pysma
The asking of a series of questions requiring complex answers.

pyterlite
Synonym of rapakivi.

pythiad
The interval of time between the Pythian Games of Ancient Greece: either four or eight years, depending on the historical period.

pythiads
plural of pythiad

pythoness
Alternative letter-case form of Pythoness.
A female soothsayer

pythonesses
plural of pythoness

pythonism
The art of predicting events after the manner of the priestess of Apollo at Delphi; equivocal prophesying.

pyuria
The presence of pus in the urine.

pyurias
plural of pyuria

pzazz
Alternative spelling of pizzazz.

q
The seventeenth letter of the English alphabet, called cue and written in the Latin script.

qabala
Alternative spelling of Kabbalah.

qabalah
Alternative spelling of Kabbalah.

qabalahs
plural of qabalah

qabalism
Alternative form of cabalism.

qabbala
Alternative form of Kabbalah.

qac
Abbreviation of quaternary ammonium cation.
Abbreviation of quaternary ammonium compound.
Ellipsis of qac gene (“a gene conveying resistance to quaternary ammonium compounds”).

qachwa
Alternative form of cachua (“type of dance”).

qachwas
plural of qachwa

qacs
plural of qac

qadar
Divine intervention in the affairs of humans; fate, predestination.

qahal
A theocratic organizational structure in ancient Israelite society; congregation, assembly.
Alternative form of kahal (local governing body of a former European Jewish community)

qahals
plural of qahal

qaid
Alternative spelling of caid.

qaids
plural of qaid

qango
Alternative form of quango.

qangos
plural of qango

qawali
Alternative form of qawwali.

qawalis
plural of qawali

qawwali
A style of Muslim devotional music, especially among the South Asian Sufis, accompanied by drums and harmonium.
A song in this style.

qawwalis
plural of qawwali

qazf
False accusation of adultery (zina).

qedoshim
Alternative spelling of kedoshim (“the victims of the Holocaust”).

qeleshe
A white brimless felt skullcap traditionally worn by Albanians.

qeleshes
plural of qeleshe.