osmometer
Any of various devices used to measure osmotic pressure.

osmometers
plural of osmometer

osmotics
The study and measurement of osmotic pressure

ossia
In a musical score, an alternative version of a passage, usually just a few measures long. The alternative may be an easier version of a particularly difficult passage, or a more difficult version of a passage.

ossias
plural of ossia

osteometrics
plural of osteometric

ounceland
An old Scots unit of measure equal to 20 pennylands.

ouncelands
plural of ounceland

ouncer
Something that weighs, or holds, a specified number of ounces.

ouncers
plural of ouncer

outage
A temporary suspension of operation, especially of electrical power supply.
The amount of something lost in storage or transportation.

outages
plural of outage

outbreaths
plural of outbreath

outdegree
The number of edges directed out of a vertex in a directed graph.

outdegrees
plural of outdegree

outerthickness
The minimum number of outerplanar subgraphs which a given graph can decompose into.

outerthicknesses
plural of outerthickness

outgos
plural of outgo

outlyingness
The measure, degree or quality of being an outlier.

outpourings
plural of outpouring

outstandings
outstanding amounts; unpaid debts

ovalities
plural of ovality

ovality
a measurement of deviation from circularity of an oval or approximately elliptical shape.

ovalocytes
plural of ovalocyte

overamperage
Synonym of overcurrent.

overchoice
An excessive amount of choice

overcompensation
An excess amount provided in one area in an effort to overcome a perceived lack in another area.
Excessive pay or reward provided for work performed.

overcompensations
plural of overcompensation

overcoordination
The presence of a higher than normal coordination number

overexpression
The abnormal or artificial expression of a gene in increased quantity

overexpressions
plural of overexpression

overgrowth
A usually abundant, luxuriant growth over or on something else.
A usually abundant, luxuriant growth over or on something else.
An excessive growth or increase in numbers, as in a population of weeds or microbes.
Excessive size; usually caused by over-production of growth hormone from the pituitary gland.

overgrowths
plural of overgrowth

overhours
Additional hours worked; overtime.

overillumination
Excess light supplied beyond the amount required for a given task.
Wasted light through illumination of an unoccupied space, creating energy wastage.
Excessive or annoying light producing glare, annoyance and adverse health effects.

overimprisonment
Synonym of overincarceration.

overincarceration
The incarceration of an excess number of people.

overmeasurement
The process or result of overmeasuring; a measurement that is larger than it should be.

overmeasurements
plural of overmeasurement

overmultitude
An large excess in numbers.

overnutrition
A form of malnutrition in which nutrients are oversupplied relative to the amounts required for normal growth, development, and metabolism.

overpayment
Payment exceeding the amount actually due.

overpayments
plural of overpayment

overpopulation
An excessive number of occupants (people, animals, plants, etc.) in a particular area; specifically, when the number of occupants exceeds the ability of that area to provide for them.

overpopulations
plural of overpopulation

overprecaution
The tendency to exercise more caution than would be necessary.
An unnecessary safety measure.

overprecautions
plural of overprecaution

overquantities
plural of overquantity

overquantity
An excessive quantity; surplus.

overresuscitation
The administration of an excessive amount of fluid during an attempt to resuscitate somebody.

overtilde
A tilde placed over another character.

overtildes
plural of overtilde

overtradings
plural of overtrading

overtrick
A trick won by the declarer's side which exceeds the amount of the contract

overtricks
plural of overtrick

ovocytes
plural of ovocyte

owre
Obsolete form of hour.
Obsolete form of oar.
Obsolete form of ore.
Obsolete form of our.

owres
plural of owre

oxaluria
The presence of oxalic acid and oxalate in the urine (which is often true, in some amount or other).
The presence of oxalic acid and oxalate in the urine (which is often true, in some amount or other).

oxalurias
plural of oxaluria

oxland
An old land measure, equivalent to eight acres.

oxlands
plural of oxland

oxyjoule
The number of joules of heat energy produced per unit of oxygen consumption.

oxyjoules
plural of oxyjoule

oxymoronicness
The state, quality or measure of being oxymoronic.

ozonide
the univalent anion, O₃⁻, derived from ozone
any dark red salt of this anion and a metal
any of a number of explosive organic compounds containing a -O-O-O- group
any of a class of heterocycles, containing two carbon atoms (in positions 3 and 5) and three oxygen atoms (in positions 1, 2 and 4) produced by the reaction of ozone with a carbon to carbon double bond; the 1,2,4-trioxolanes

ozonides
plural of ozonide

pachometer
Alternative form of pachymeter.

pachometers
plural of pachometer

pachymeter
Any of several instruments that are used to measure the thickness of something.

pachymeters
plural of pachymeter

packfong
Alternative form of paktong.

packtong
Alternative form of paktong.

packyear
A measure of the cigarettes a person has smoked, equal to a pack (of twenty cigarettes) each day for a year.

packyears
plural of packyear

paddleful
The amount that can be held on, or displaced by, a paddle.

paddlefuls
plural of paddleful

pailful
The amount that fills, or would fill, a pail.

pailfuls
plural of pailful

pailsful
plural of pailful

paitung
Alternative form of paktong.

pakfong
Archaic form of paktong.

paktong
An alloy of zinc, copper and nickel, closely resembling silver, of Chinese origin; any of a number of similar alloys developed in imitation of the Chinese product.

paktongs
plural of paktong

palaeolatitude
British standard spelling of paleolatitude.

palaeolatitudes
plural of palaeolatitude

palaeolongitude
British standard spelling of paleolongitude.

palaeolongitudes
plural of palaeolongitude

palaeomonsoon
Alternative spelling of paleomonsoon.

palaeomonsoons
plural of palaeomonsoon

palaeorainfall
Alternative form of paleorainfall.

paleolatitude
The former latitude of a particular geologic formation at a time in the geologic past, often specifically the time of formation

paleolatitudes
plural of paleolatitude

paleolongitude
The former longitude of a particular geologic formation at a time in the geologic past, often specifically the time of formation

paleolongitudes
plural of paleolongitude

paleomonsoon
Any monsoon that existed in the paleoclimates of the distant past.

paleorainfall
rainfall in prehistoric times

palindrome
A word, phrase, number or any other sequence of units which has the property of reading the same forwards as it does backwards, character for character, sometimes disregarding punctuation, capitalization and diacritics.
A poetic form in which the sequence of words reads the same in either direction.
A sequence of items that follows the same pattern both forwards and backwards.
A stretch of DNA in which the sequence of nucleotides on one strand are in the reverse order to that of the complementary strand

palindromes
plural of palindrome

palmload
A handful
The amount of something which can be held in one's palm of their hand.
A lot

palmloads
plural of palmload

palmo
A traditional Spanish unit of length, equivalent to about 20.8 cm.
A traditional Portuguese unit of length, usually equivalent to about 22 cm.

palmos
plural of palmo

palmspan
A measure of length equivalent to the breadth of the palm of an average human hand.

palmspans
plural of palmspan

pancytopenia
A reduction in the numbers of red blood cells, white blood cells and platelets in the blood

pancytopenias
plural of pancytopenia