opinionnaire
A form containing a list of statements, each of which the members of a selected group are asked to endorse or reject; the purpose being to gather information for a survey.

opinionnaires
plural of opinionnaire

opries
plural of opry

opry
Opera.
An establishment providing country or folk music.

optimalisation
Alternative form of optimalization.

optimalisations
plural of optimalisation

optimalization
Alternative form of optimization.

optimalizations
plural of optimalization

optimisation
Alternative spelling of optimization.

optimisations
plural of optimisation

optimization
The design and operation of a system or process to make it as good as possible in some defined sense.
The reduction of a program or algorithm to its most efficient form, as during compilation, by removing unused portions of code and improving the speed or resource usage of others.

optimizations
plural of optimization

optotype
A standardized symbol for testing vision.
An eye chart

optotypes
plural of optotype

opus
A work of music or set of works with a specified rank in an ordering of a composer's complete published works.
A work, especially of art.

opuses
plural of opus

oraria
plural of orarion
plural of orarium

orarium
A collection of private devotions.

orchesis
The act and/or art of dancing.

organigram
A graphical representation of the structure of an organization, showing groups and departments and their interconnections and linked responsibilities.

organigramme
An organization chart.

organigrammes
plural of organigramme

organigrams
plural of organigram

organogram
Alternative spelling of organigram.

organograms
plural of organogram

orihon
A book in the form of a long strip of paper with writing on one side, folded in zigzag fashion, historically associated with Japan and China.

ornithomancy
Divination by means of birds, especially from their behaviour, flight, vocalisations, etc.

ornithomantia
Obsolete form of ornithomancy.

orometer
An aneroid barometer having a second scale that gives the approximate elevation above sea level of the place where the observation is made.

orometers
plural of orometer

orosensation
A false sensation of taste obtained by stimulation of the tongue.

orosensations
plural of orosensation

orthochess
The conventional game and rules of chess.

orthogeneses
plural of orthogenesis

orthogenesis
The hypothesis that evolution tends toward a certain goal, at least at some scales.

orthomosaic
A mosaic of orthorectified images

orthomosaics
plural of orthomosaic

orthophonist
speech therapist

orthophonists
plural of orthophonist

orthophotomosaic
An image composed of multiple orthophotos

orthophotomosaics
plural of orthophotomosaic

orthotactics
The restrictions a language applies to the positions and patterns of graphemes in written words.

orthotypographies
plural of orthotypography

orthotypography
The study of correct typography according to established usage.

ostracum
A fragment of pottery.
The middle layer of a molluscan shell.

ostruble
A former currency of Germany and Lithuania in the 1910s and 1920s.

ostrubles
plural of ostruble

otacore
A music genre of songs with their origins in fan communities (such as that of J-pop) and typically having an electropop beat.

ougiya
Alternative form of ouguiya.

ougiyas
plural of ougiya

ouguiya
The currency of Mauritania, divided into five khoums.

ouguiyas
plural of ouguiya

ouija
Alternative letter-case form of Ouija.

ouijas
plural of ouija

ouncil
Scales for weighing produce at a market

ouncils
plural of ouncil

outroduction
The closing remarks made at the end of a book, story, performance, etc.

outroductions
plural of outroduction

ouverture
Uncommon form of overture.

ouvertures
plural of ouverture

ouvre
Misspelling of oeuvre.

overbrace
The symbol ⏞.

overbraces
plural of overbrace

overmap
The map of an overworld.

overmaps
plural of overmap

overscan
The additional area around the four edges of a video image, outside of the safe area, that is not normally seen by the viewer.

oversegmentation
A division into too many segments, as when attempting to recognize parts of an image.

oversegmentations
plural of oversegmentation

ovomancy
Synonym of oomancy.

oware
A board game of the mancala family which originated in Africa, and is reputedly the oldest game in the world.

owari
Alternative form of oware.

owarri
Alternative form of oware.

oyrur
The official coin of the Faroe Islands, worth one hundredth of a króna.

ozumo
professional sumo wrestling

pacemapping
The graphical representation of tachycardia during pacing

pachisi
An ancient Indian board game in which players, throwing dice, shells, etc. to determine the distance of each move, attempt to be the first to take all of their counters around the board.

pachyglossia
An abnormal thickening of the tongue.

pada
The basic metric unit of Vedic poetry, consisting of one line of verse in Sanskrit, typically as part of a four-line stanza.

padam
In Carnatic music, a type of short song, or the accompanying dance.

padams
plural of padam

padas
plural of pada

padel
A racquet sport popular in Spain and Latin America, usually played in doubles on a small, closed court.

paduk
Alternative spelling of baduk.

paeanism
A song or enthusiastic expression of praise or triumph.

paeanisms
plural of paeanism

paediatrics
Standard spelling of pediatrics.

paediatries
plural of paediatry

paediatry
Alternative form of paediatrics, the branch of medicine that deals with the treatment of children.

paeonics
Verse written in paeons.

paganica
A Roman ball stuffed with feathers, used in a game that is sometimes considered a precursor to golf (since early golf balls had a similar construction).
The game itself.

paganing
A pagan ritual analogous to baptism for infants.

paganings
plural of paganing

pagelist
A list of pages.

pagelists
plural of pagelist

paillard
A slice of meat pounded thin and grilled.

paillards
plural of paillard

painjan
A traditional Indian anklet, often adorned with small bells or intricate designs. The delicate sound produced by the bells as the wearer moves is considered auspicious and adds a musical quality to footsteps.

paintover
An instance of painting over the top of something, such as an existing artwork or a graffiti tag.

paintovers
plural of paintover

painture
The art of painting.
A painting.

paintures
plural of painture

pairwork
work done in pairs

pakapoo
A Chinese lottery game popular in Oceania in the 19th century, involving tickets marked with rows of Chinese characters.

palaeoart
Alternative form of paleoart.

palaeograph
Alternative spelling of paleograph.

palaeographs
plural of palaeograph

palaeolandscape
Alternative form of paleolandscape.

palaeolandscapes
plural of palaeolandscape

palaeotype
An old book printed between 1500 and 1550.
A phonetic alphabet developed by Alexander John Ellis to represent all spoken sounds of English by means of the printing types that were in common use in the mid-19th century, one of the predecessors of IPA.

palaeotypes
plural of palaeotype

palatogram
An image produced by palatography

palatograms
plural of palatogram

palatography
A technique used to identify which parts of the mouth are used when making a certain sound, by painting a colouring agent on the tongue or roof of a subject's mouth and photographing those areas after the subject has pronounced the sound.

palenque
A community of runaway slaves.

palenques
plural of palenque

paleoart
Art that depicts subjects related to paleontology.
The primitive art of Paleolithic peoples.

paleobiolinguistics
The study of the interaction of biology and ancient language

paleograph
An ancient manuscript.

paleographs
plural of paleograph

paleoindication
Synonym of paleoindicator.

paleoindications
plural of paleoindication

paleoindicator
evidence for an ancient event

paleoindicators
plural of paleoindicator

paleolandscape
A landscape as it was in ancient times