opercularisation
Alternative form of opercularization.

opercularization
The formation and development of the operculum

operculation
The condition of being operculate

operculectomies
plural of operculectomy

operculectomy
The surgical procedure of removing the operculum.

operonization
The formation of operons in a genome

operoseness
The state of being operose; tedium.

operosity
Laboriousness; painstakingness.

opers
plural of oper

opgaaf
A tax on produce, stock, and capitation.

opgaafs
plural of opgaaf

ophelimity
Economic satisfaction.
The ability to please another.

ophiasis
A form of alopecia areata characterized by the loss of hair in the shape of a wave at the circumference of the head.

ophidiophobia
Ophiophobia; a fear of snakes.

ophiology
The study of snakes, a branch of herpetology.

ophiophagy
The eating of snakes.

ophiophobia
A morbid fear of snakes.

ophthalmalgia
pain in the eye

ophthalmectomies
plural of ophthalmectomy

ophthalmectomy
The enucleation of the eyeball.

ophthalmics
Ophthalmic studies or industry.

ophthalmodynia
Pain in the eye.

ophthalmofundoscopy
ophthalmic fundoscopy

ophthalmogeometry
The positioning and separation of the eyes

ophthalmography
The scientific description of the eye.

ophthalmometry
Measurement of the visual acuity and refractive power of the eyes.

ophthalmophobia
Synonym of scopophobia.

ophthalmosonometry
Sonometry of the eyes.

ophthalmotomies
plural of ophthalmotomy

ophthalmotomy
dissection of or incision into the eye

ophthalmotonometry
Measurement of the intraocular tension.

opiism
Alternative form of opiumism

opilionid
Any of the harvestmen/daddy longlegs in the order Opiliones.

opilionids
plural of opilionid

opilionology
The study of the Opiliones or harvestmen.

opinability
The quality of being opinable.

opination
The state or process of opining.

opinations
plural of opination

opiniastrety
Stubbornness; obstinacy.

opiniativeness
The quality of being opiniative.

opiniatrety
opinionatedness

opinionatedness
The state or condition of being opinionated.

opinionation
The quality of being opinionated.

opinionations
plural of opinionation

opinionativeness
Quality of being opinionative.

opinionlessness
Absence of opinions.

opinionmaking
The process of influencing the public in their opinions.

opiomania
Opium addiction.

opiophagism
The oral consumption of opium.

opiophilia
An inclination toward prescribing opiates.

opiophobia
An aversion to prescribing opiates.

opisthenar
The back of the hand.

opisthobranchism
The property of being an opisthobranch.

opisthocoely
The condition of being opisthocoelous

opisthography
A writing upon the back of anything, as upon the back of a sheet already written upon on one side.

opisthothorax
The portion of the thorax behind the prothorax.

opitulation
The act of helping or aiding; assistance.

opiumism
Opium addiction.

opo
The calabash or bottle gourd.

opotherapy
organotherapy

oppertunity
Misspelling of opportunity.

oppigneration
Alternative form of oppignoration.

oppignoration
The act of pawning or laying in pledge.

oppignorations
plural of oppignoration

oppilation
The act of crowding or filling together
a stopping by redundant matter, i.e. an obstruction, particularly in the lower intestines.

oppilations
plural of oppilation

oppletion
The act of filling up.
fullness (especially of an organ)

opponencies
plural of opponency

opponency
The act of opening an academic disputation; the proposition of objections to a tenet, as an exercise for a degree.

opportuneness
The state or condition of being opportune.

opportunism
The practice of taking advantage of any situations or people to achieve an end, often with no regard for principles or consequences.
The political line of Communist Party members who zealously support the Party, but whose trait is that they yield to the mood of the moment, they are unable to resist what is fashionable, leading to the sacrifice of the permanent and essential interests of the Party to the momentary and minor interests.

opportunisms
plural of opportunism

opportunities
plural of opportunity

opportunity
A chance for advancement, progress or profit.
A favorable circumstance or occasion.
Opportuneness.

opposabilities
plural of opposability

opposability
The condition or quality of being opposable (capable of being placed opposite to something else).
The condition or quality of being opposable (capable of being resisted).

opposal
opposition

opposals
plural of opposal

opposedness
Quality of being opposed.

oppositeness
The state or condition of being opposite.

oppositenesses
plural of oppositeness

opposition
The action of opposing or of being in conflict.
An opposite or contrasting position.
The apparent relative position of two celestial bodies when one is at an angle of 180 degrees from the other as seen from the Earth.
A political party or movement opposed to the party or government in power.
In United States intellectual property law, a proceeding in which an interested party seeks to prevent the registration of a trademark or patent.
A position in which the player on the move must yield with his king allowing his opponent to advance with his own king.
The difference of quantity or quality between two propositions having the same subject and predicate.

oppositionalism
An oppositional approach or attitude.

oppositionalities
plural of oppositionality

oppositionality
The quality of being oppositional.

oppositionism
A policy of opposition (principally in politics)

oppositions
plural of opposition

oppositiveness
The quality of being oppositive.

opposure
Opposition.

oppression
The exercise of authority or power in a burdensome, cruel, or unjust manner.
The act of oppressing, or the state of being oppressed.
A feeling of being oppressed. Special usage may include a sense of heaviness or obstruction in the body or mind; depression; dullness; lassitude.

oppressionism
Synonym of oppression.

oppressions
plural of oppression

oppressiveness
The characteristic of being oppressive.

oppressivenesses
plural of oppressiveness

oppressure
oppression

oppressures
plural of oppressure

opprobriation
Scornful reproach or disapproval; opprobrium.

opprobriousness
The state or condition of being opprobrious.

oppugnacy
Alternative form of oppugnance.

oppugnance
Dislike, aversion, animus; opposition: the fact, condition, or instance of being at variance, opposed, hostile, or adverse.

oppugnances
plural of oppugnance

oppugnancies
plural of oppugnancy

oppugnancy
The act of oppugning; opposition; resistance

oppugnation
opposition

oppugnations
plural of oppugnation

oppurtunity
Misspelling of opportunity.

oprichnina
The period of Russian history between 1565 and 1572 during which Tsar Ivan the Terrible instituted a domestic policy of secret police, mass repressions, public executions, and confiscation of land from Russian aristocrats.
This domestic policy.

opsec
Alternative form of OPSEC.

opsigamy
marriage at an old age

opsinization
Misspelling of opsonization.

opsiometer
An old type of optometer.

opsiometers
plural of opsiometer

opsoclonus
Rapid, uncontrolled eye movement

opsonification
Synonym of opsonization.

opsonisation
Alternative spelling of opsonization.

opsonization
The process or result of opsonizing

opsonizations
plural of opsonization

opsonophilia
Affection to opsonin.

opsonotherapy
treatment by increasing the opsonin levels in the bloodstream

optation
A wish; a desire.

optations
plural of optation

opticality
The quality of being optical, or apprehended through sight.

opticianry
The professional field of working as an optician.

opticities
plural of opticity

opticity
The degree of optical activity of a solution

optimacies
plural of optimacy

optimacy
government by the nobility
the nobility, collectively
a most favourable condition or state

optimalism
The doctrine that this universe exists because it is better than the alternatives.

optimalities
plural of optimality