Copy of `Princeton University - WordNet - a lexical database for the English language`

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Princeton University - WordNet - a lexical database for the English language Category: General Date & country: 27/01/2008, USA Words: 85192

opposable
apposable adjective capable of being placed opposite to something; `the thumb is opposable to the forefinger`

oppose
fight down verb fight against or resist strongly; `The senator said he would oppose the bill`; `Don`t fight it!`

opposed
opposing adjective in opposition to (a policy or attitude etc.); `an opposing vote`

opposite
adjective the other one of a complementary pair; `the opposite sex`; `the two chess kings are set up on squares of opposite colors`

opposite
adverb directly facing each other; `the two photographs lay face-to-face on the table`; `lived all their lives in houses face-to-face across the street`; `they sat opposite at the table`

oppositely
adverb in an opposite position

oppositeness
noun the relation between opposed entities

opposition
noun a body of people united in opposing something

opposition
noun a contestant that you are matched against

oppression
oppressiveness noun a feeling of being oppressed

oppressive
tyrannical adjective marked by unjust severity or arbitrary behavior; `the oppressive government`; `oppressive laws`; `a tyrannical parent`; `tyrannous disregard of human rights`

oppressively
adverb in a heavy and oppressive way; `it was oppressively hot in the office`

oppressor
noun a person of authority who subjects others to undue pressures

opprobrium
noun a state of extreme dishonor; `a date which will live in infamy`- F.D.Roosevelt; `the name was a by-word of scorn and opprobrium throughout the city`

oppugn
call into question verb challenge the accuracy, probity, or propriety of; `We must question your judgment in this matter`

Ops
noun (Roman mythology) goddess of abundance and fertility; wife of Saturn; counterpart of Greek Rhea and Cybele of ancient Asia Minor

opsin
noun retinal protein formed by the action of light on rhodopsin

opsonin
noun an antibody in blood serum that attaches to invading microorganisms and other antigens to make them more susceptible to the action of phagocytes

opsonization
opsonisation noun process whereby opsonins make an invading microorganism more susceptible to phagocytosis

optative
adjective relating to a mood of verbs in some languages; `optative verb endings`

optative mood
optative noun a mood (as in Greek or Sanskrit) that expresses a wish or hope; expressed in English by modal verbs

Optez
noun an artificial language

optic chiasma
optic chiasm noun the crossing of the optic nerves from the two eyes at the base of the brain

optic cup
eyecup noun (embryology) a two-walled cuplike depression that develops into the pigmented and sensory layers of the retina

optic nerve
nervus opticus noun the cranial nerve that serves the retina

optical bench
noun apparatus for observation and measurement of optical phenomena

optical crown
crown glass noun optical glass of low dispersion and low refractive index

optical device
noun a device for producing or controlling light

optical disk
optical disc noun a disk coated with plastic that can store digital data as tiny pits etched in the surface; is read with a laser that scans the surface

optical fiber
glass fiber noun a very thin fiber made of glass that functions as a waveguide for light; used in bundles to transmit images

optical flint
flint glass noun optical glass of high dispersion and high refractive index

optical glass
noun clear homogeneous glass of known refractive index; used to make lenses

optical illusion
noun an optical phenomenon that results in a false or deceptive visual impression

optical instrument
noun an instrument designed to aid vision

optical opacity
noun opacity to light

optical phenomenon
noun a physical phenomenon related to or involving light

optical pyrometer
pyroscope noun a pyrometer that uses the color of the light emitted by a hot object

optical telescope
noun an astronomical telescope designed to collect and record light from cosmic sources

optically
adverb in an optical manner; `optically distorted`

optician
lens maker noun a worker who makes glasses for remedying defects of vision

optics
noun the branch of physics that studies the physical properties of light

optimally
adverb in an optimal and most desirable way

optimism
noun a general disposition to expect the best in all things

optimist
noun a person disposed to take a favorable view of things

optimistic
adjective expecting the best in this best of all possible worlds; `in an optimistic mood`; `optimistic plans`; `took an optimistic view`

optimistically
adverb with optimism; in an optimistic manner; ``We have a good chance of winning,` he exclaimed optimistically`

optimization
optimisation noun the act of rendering optimal; `the simultaneous optimization of growth and profitability`; `in an optimization problem we seek values of the variables that lead to an optimal value of the function that is to be optimized`; `to promote the optimization and diversification of agricultural products`

optimum
optimal adjective most desirable possible under a restriction expressed or implied; `an optimum return on capital`; `optimal concentration of a drug`

option
alternative noun one of a number of things from which only one can be chosen; `what option did I have?`; `there no other alternative`; `my only choice is to refuse`

optional
adjective possible but not necessary; left to personal choice

optionally
adverb in an optional manner; `this rule is applied optionally`

optometrist
noun a person skilled in testing for defects of vision in order to prescribe corrective glasses

optometry
noun the practice of an optometrist

Opuntia
genus Opuntia noun large genus of cactuses native to America: prickly pears

Opuntia lindheimeri
noun cactus having yellow flowers and purple fruits

Opuntiales
order Opuntiales noun coextensive with the family Cactaceae: cactuses

OR circuit
OR gate noun a gate circuit in a computer that fires when any of its inputs fire

orach
orache noun any of various herbaceous plants of the genus Atriplex that thrive in deserts and salt marshes

oracle
noun a shrine where an oracular god is consulted

oracular
adjective of or relating to an oracle; `able by oracular means to expose a witch`

orad
adverb toward the mouth or oral region

oral
unwritten adjective using speech rather than writing; `an oral tradition`; `an oral agreement`

oral cancer
noun malignant neoplasm of the lips of mouth; most common in men over the age of 60

oral cavity
oral fissure noun the opening through which food is taken in and vocalizations emerge; `he stuffed his mouth with candy`

oral contraception
noun contraception achieved by taking oral contraceptive pills

oral contract
noun an agreement that is not in writing and is not signed by the parties but is a real existing contract that lacks only the formal requirement of a memorandum to render it enforceable in litigation

oral herpes
herpes labialis noun caused by herpes simplex virus type 1 (HSV-1)

oral personality
noun (psychoanalysis) a personality characterized either by generous optimism or aggressive and ambitious selfishness; formed in early childhood by fixation during the oral stage of development

oral sex
head noun oral stimulation of the genitals; `they say he gives good head`

oral smear
noun alimentary tract smear of material obtained from the mouth

oral stage
oral phase noun (psychoanalysis) the first sexual and social stage of an infant`s development; the mouth is the focus of the libido and satisfaction comes from suckling and chewing and biting

orally
by word of mouth adverb by spoken rather than written means; `these stories were transmitted by word of mouth`

orally
adverb (of drugs) through the mouth rather than through injection; `he was administered the drug orally`

Oran
noun a port city in northwestern Algeria and the country`s 2nd largest city

orange
orangish adjective of the color between red and yellow; similar to the color of a ripe orange

orange bat
orange horseshoe bat noun a common bat of northwestern Australia having orange or yellow fur

orange daisy
orange fleabane noun mat-forming herb of Turkestan with nearly double orange-yellow flowers

Orange Free State
noun a province in central South Africa that was colonized by the Boers; named Free State in 1997

orange grass
nitweed noun annual wiry-stemmed North American weed with minute scalelike leaves and small yellow flowers

Orange Group
OV noun a terrorist group of Protestants who oppose any political settlement with Irish nationalists; a paramilitary group that attacks Catholic interests in Northern Ireland

orange grove
noun grove of orange trees

orange hawkweed
Pilosella aurantiaca noun European hawkweed having flower heads with bright orange-red rays; a troublesome weed especially as naturalized in northeastern North America; sometimes placed in genus Hieracium

orange juice
noun bottled or freshly squeezed juice of oranges

orange liqueur
noun liqueur flavored with orange

orange marmalade
noun marmalade made from oranges

orange milkwort
yellow milkwort noun bog plant of pine barrens of southeastern United States having spikes of irregular yellow-orange flowers

orange mushroom pimple
noun a variety of mushroom pimple

Orange Order
Association of Orangemen noun a Protestant political organization in Northern Ireland

orange peel
orange rind noun the rind of an orange

orange pekoe
pekoe noun a superior grade of black tea; grown in India and Sri Lanka and Java

orange sneezeweed
owlclaws noun stout perennial herb of western United States having flower heads with drooping orange-yellow rays; causes spewing sickness in sheep

orange soda
noun orange-flavored carbonated drink

orange toast
noun buttered toast with sugar and grated orange rind and a little orange juice

orange tortrix
tortrix 2 Argyrotaenia citrana noun California moth whose larvae live in especially oranges

orange yellow
saffron noun a shade of yellow tinged with orange

orange zest
noun tiny bits of orange peel

orange-blossom orchid
Sarcochilus falcatus noun diminutive Australian orchid with loose racemes of fragrant white flowers with purple and orange markings on the lip

orange-brown
adjective of brown tinged with orange

orange-colored
orange-coloured adjective having the color or ripe oranges

orange-flowered
adjective having orange flowers