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

Ononis spinosa
noun Eurasian plant having loose racemes of pink or purple flowers and spiny stems and tough roots

Onopordum
genus Onopordum noun a genus of Eurasian herbs of the family Compositae with prickly foliage and large purplish flowers

Onosmodium
genus Onosmodium noun a genus of North American perennial herbs of the family Boraginaceae

onrush
noun a forceful forward rush or flow; `from the bow she stared at the mesmerising onrush of the sea where it split and foamed`; `the explosion interrupted the wild onrush of her thoughts`

onset
oncoming noun the beginning or early stages; `the onset of pneumonia`

onshore
adjective on the edge of the land; `an onshore lighthouse`

onside
adjective not offside; being within the prescribed area of play

onslaught
noun a sudden and severe onset of trouble

onstage
adjective situated or taking place on the area of a stage visible to the audience

Ontario
noun a prosperous and industrialized province in central Canada

ontogenetic
adjective of or relating to the origin and development of individual organisms; `ontogenetic development`

ontological
adjective of or relating to ontology; `ontological speculations`

ontology
noun the metaphysical study of the nature of being and existence

onward
forward 1 forwards adverb in a forward direction; `go ahead`; `the train moved ahead slowly`; `the boat lurched ahead`; `moved onward into the forest`; `they went slowly forward in the mud`

onwards
forward 1 forwards adverb in a forward direction; `go ahead`; `the train moved ahead slowly`; `the boat lurched ahead`; `moved onward into the forest`; `they went slowly forward in the mud`

Onychium
genus Onychium noun small terrestrial ferns of Old World tropics and subtropics: claw ferns; sometimes placed in family Cryptogrammataceae

Onychogalea
genus Onychogalea noun a genus of Macropodidae

onycholysis
noun separation of a nail from its normal attachment to the nail bed

Onychomys
genus Onychomys noun grasshopper mice

Onychophora
class Onychophora noun enigmatic small elongated wormlike terrestrial invertebrates of damp dark habitats in warm regions; distinct from the phylum Annelida; resemble slugs with legs and are sometimes described as the missing link between arthropods and annelids

onychophoran
velvet worm noun any of numerous velvety-skinned wormlike carnivorous animals common in tropical forests having characteristics of both arthropods and annelid worms

onychosis
noun any disease or disorder of the nails

onymous
adjective bearing a name; `articles in magazines are usually onymous`

onyx
noun a chalcedony with alternating black and white bands; used in making cameos

oocyte
noun a female gametocyte that develops into an ovum after two meiotic divisions

oogenesis
noun development of ova

oology
noun the branch of zoology that studies eggs (especially birds` eggs and their size, shape, coloration, and number)

oolong
noun Chinese tea leaves that have been partially fermented before being dried

Oomycetes
class Oomycetes noun nonphotosynthetic fungi that resemble algae and that reproduce by forming oospores; sometimes classified as protoctists

oophorectomy
ovariectomy noun surgical removal of one of both ovaries

oophoritis
noun inflammation of one or both ovaries

oophorosalpingectomy
noun surgical removal of one or both ovaries and the corresponding Fallopian tubes

Oort
Jan Hendrix Oort noun Dutch astronomer who proved that the galaxy is rotating and proposed the existence of the Oort cloud (1900-1992)

Oort cloud
noun (astronomy) a hypothetical huge collection of comets orbiting the sun far beyond the orbit of Pluto; perturbations (as by other stars) can upset a comet`s orbit and may send it tumbling toward the sun

oosphere
noun used especially of lower plants

oospore
noun a thick-walled sexual spore that develops from a fertilized oosphere in some algae and fungi

ootid
noun mature ovum after penetration by sperm but before the formation of a zygote

ooze leather
noun a very soft leather made from the skins of calves and having a suede finish on the flesh side

oozing
oozy adjective leaking out slowly

op art
noun a style of abstractionism popular in the 1960s; produces dramatic visual effects with colors and contrasts that are difficult for the eye to resolve

opacification
noun the process of becoming cloudy or opaque

opacity
opaqueness noun the quality of being opaque to a degree; the degree to which something reduces the passage of light

opah
moonfish 1 Lampris regius noun large elliptical brightly colored deep-sea fish of Atlantic and Pacific and Mediterranean

opal
noun a translucent mineral consisting of hydrated silica of variable color; some varieties are used as gemstones

opal glass
milk glass noun a milky white translucent or opaque glass

opalescence
iridescence noun the visual property of something having a milky brightness and a play of colors from the surface

opaque
unintelligible adjective not clearly understood or expressed

opaque gem
noun a gemstone that is opaque

opaquely
adverb in an opaque manner; `he referred opaquely to her recent past`

Opel
Wilhelm von Opel noun German industrialist who was the first in Germany to use an assembly line in manufacturing automobiles (1871-1948)

open
opened adjective not sealed or having been unsealed; `the letter was already open`; `the opened package lay on the table`

open
noun a clear or unobstructed space or expanse of land or water; `finally broke out of the forest into the open`

open account
noun an unpaid credit order

open chain
noun a chain of atoms in a molecule whose ends are not joined to form a ring

open circuit
noun an incomplete electrical circuit in which no current flows

open door
noun freedom of access; `he maintained an open door for all employees`

open fireplace
noun an open recess in a wall at the base of a chimney where a fire can be built; `the fireplace was so large you could walk inside it`; `he laid a fire in the hearth and lit it`; `the hearth was black with the charcoal of many fires`

open frame
noun any frame in which a bowler fails to make a strike or spare; `the break in the eighth frame cost him the match`

open house
noun an informal party of people with hospitality for all comers

open interval
unbounded interval noun an interval that does not include its endpoints

open letter
noun a letter of protest; addressed to one person but intended for the general public

open marriage
noun a marriage in which each partner is free to enter into extraneous sexual relationships without guilt or jealousy from the other

open order
noun a military formation leaving enough space between ranks to allow an inspecting officer to pass

open primary
noun a primary in which any registered voter can vote (but must vote for candidates of only one party)

open secret
noun something that is supposed to be secret but is generally known; `their love affair was an open secret`

open sesame
noun any very successful means of achieving a result

open shop
noun a company whose workers are hired without regard to their membership in a labor union

open sight
noun rear gunsight having an open notch instead of a peephole or telescope

open society
noun a society that allows its members considerable freedom (as in a democracy); `America`s open society has made it an easy target for terrorists`

Open University
noun a British university that is open to people without formal academic qualifications and where teaching is by correspondence or broadcasting or summer school

open weave
noun a weave in which warp threads never come together, leaving interstices in the fabric

open-air market
open-air marketplace noun a public marketplace where food and merchandise is sold

open-and-shut
adjective so obvious as to be easily solved or decided; `an open-and-shut case`

open-chain
adjective chemistry; not cyclic; having an open chain structure

open-collared
adjective of a shirt; not buttoned at the neck; `dressed casually in shorts and an open-collared shirt`

open-door policy
open door noun the policy of granting equal trade opportunities to all countries

open-end credit
revolving credit noun a consumer credit line that can be used up to a certain limit or paid down at any time

open-end wrench
tappet wrench noun a wrench having parallel jaws at fixed separation (often on both ends of the handle)

open-ended
adjective allowing for future changes or revisions; `open-ended agreements`

open-face sandwich
open sandwich noun sandwich without a covering slice of bread

open-heart surgery
noun heart surgery in which the rib cage is spread open, the heart is stopped and blood is detoured through a heart-lung machine while a heart valve or coronary artery is surgically repaired

open-hearth
adjective of or relating to or produced by the open-hearth process; `open-hearth steel`

open-hearth furnace
noun a furnace for making steel in which the steel is placed on a shallow hearth and flames of burning gas and hot air play over it

open-hearth process
noun a process for making steel using an open-hearth furnace

open-minded
adjective ready to entertain new ideas; `an open-minded curiosity`; `open-minded impartiality`

open-plan
adjective (of rooms or buildings) having large rooms with few dividing partitions

open-source
adjective of or relating to or being computer software for which the source code is freely available

open(a)
adjective not requiring union membership; `an open shop employs nonunion workers`

openbill
noun stork with a grooved bill whose upper and lower parts touch only at the base and tip

opencast
opencut adjective (of mines and mining) worked from the exposed surface; `opencast mining`; `an opencut iron mine`

opened
adjective made open or clear; `the newly opened road`

opener
noun a hand tool used for opening sealed containers (bottles or cans)

openhearted
adjective freely communicative; candidly straightforward; `openhearted advice`

opening
adjective first or beginning; `the memorable opening bars of Beethoven`s Fifth`; `the play`s opening scene`

opening line
noun the first line of a piece of writing (as a newspaper story)

openly
adverb in an open way; `he openly flaunted his affection for his sister`

openness
noun characterized by an attitude of ready accessibility (especially about one`s actions or purposes); without concealment; not secretive

openside plane
rabbet plane noun a woodworking plane designed to cut rabbets

openwork
noun ornamental work (such a embroidery or latticework) having a pattern of openings

opepe
Nauclea diderrichii noun large African forest tree yielding a strong hard yellow to golden brown lumber; sometimes placed in genus Sarcocephalus