addition | the act of adding one thing to another, the addition of flowers created a pleasing effect, the addition of a leap day every four years |
summation addition plus | the arithmetic operation of summing, calculating the sum of two or more numbers, the summation of four and three gives seven, four plus three equals seven |
matrix addition | the addition of matrices |
accommodating lens implant accommodating IOL | a lens implant containing a hinge that allows for both near and far vision (thus mimicking the natural lens of a young person) |
achromatic lens | a compound lens system that forms an image free from chromatic aberration |
addition add-on improver | a component that is added to something to improve it, the addition of a bathroom was a major improvement, the addition of cinnamon improved the flavor |
anastigmatic lens | a lens designed to correct astigmatism |
camera lens optical lens | a lens that focuses the image in a camera |
closeup lens | a photographic lens with a short focal length used to take pictures at short ranges |
compound lens | a lens system consisting of two or more lenses on the same axis |
contact contact lens | a thin curved glass or plastic lens designed to fit over the cornea in order to correct vision or to deliver medication |
converging lens convex lens | lens such that a beam of light passing through it is brought to a point or focus |
crown lens | a lens made of optical crown glass |
diverging lens concave lens | a lens such that a parallel beam of light passing through it is caused to diverge or spread out |
field lens | the lens that is farthest from the eye in an optical device with more than one lens |
Fresnel lens | lens composed of a number of small lenses arranged to make a lightweight lens of large diameter and short focal length |
hood lens hood | a tubular attachment used to keep stray light out of the lens of a camera |
intraocular lens | an artificial lens that is implanted into the eye of someone to replace a damaged natural lens or someone who has had a cataract removed |
lens lense lens system | a transparent optical device used to converge or diverge transmitted light and to form images |
lens electron lens | electronic equipment that uses a magnetic or electric field in order to focus a beam of electrons |
lens cap lens cover | cap used to keep lens free of dust when not in use |
lens implant interocular lens implant IOL | a clear plastic lens that is implanted in the eye, usually done when the natural lens has been removed in a cataract operation |
monofocal lens implant monofocal IOL | a lens with a single focus that is used after cataract surgery to provide clear distance vision |
multifocal lens implant multifocal IOL | a type of lens implant that contains several rings with a common center and adjusts for near or far vision, the eye is in focus for near and far vision simultaneously |
objective objective lens object lens object glass | the lens or system of lenses in a telescope or microscope that is nearest the object being viewed |
portrait lens | a compound camera lens with a relatively high aperture |
telephoto lens zoom lens | a camera lens that magnifies the image |
wide-angle lens fisheye lens | a camera lens having a wider than normal angle of view (and usually a short focal length), produces an image that is foreshortened in the center and increasingly distorted in the periphery |
lens crystalline lens lens of the eye | biconvex transparent body situated behind the iris in the eye, its role (along with the cornea) is to focuses light on the retina |
lens cortex cortex | the tissue that surrounds the lens nucleus |
lens nucleus nucleus | the central structure of the lens that is surrounded by the cortex |
lens capsule | a tenuous mesoblastic membrane surrounding the lens of the eye |
lens | (metaphor) a channel through which something can be seen or understood, the writer is the lens through which history can be seen |
progressive rock art rock | a style of rock music that emerged in the s, associated with attempts to combine rock with jazz and other forms, intended for listening and not dancing |
Progressive Party Bull Moose Party | a former political party in the United States, founded by Theodore Roosevelt during the presidential campaign of , its emblem was a picture of a bull moose |
addition | a suburban area laid out in streets and lots for a future residential area |
liberal liberalist progressive | a person who favors a political philosophy of progress and reform and the protection of civil liberties |
optician lens maker | a worker who makes glasses for remedying defects of vision |
Lens genus Lens | genus of small erect or climbing herbs with pinnate leaves and small inconspicuous white flowers and small flattened pods: lentils |
lentil lentil plant Lens culinaris | widely cultivated Eurasian annual herb grown for its edible flattened seeds that are cooked like peas and also ground into meal and for its leafy stalks that are used as fodder |
accession addition | something added to what you already have, the librarian shelved the new accessions, he was a new addition to the staff |
progressive tax graduated tax | any tax in which the rate increases as the amount subject to taxation increases |
addition reaction | a chemical reaction in which one molecule is added to another |
addition increase gain | a quantity that is added, there was an addition to property taxes this year, they recorded the cattle's gain in weight over a period of weeks |
progressive aspect | the aspect of a verb that expresses its on-going action |
progressive progressive tense imperfect imperfect tense continuous tense | a tense of verbs used in describing action that is on-going |
present progressive present progressive tense | a tense used to express action that is on-going at the time of utterance |
past progressive past progressive tense | a progressive tense used to describe on-going action in the past, `I had been running' is an example of the past progressive |
future progressive future progressive tense | a progressive tense used to express action that will be on-going in the future, `I will be running' is an example of the future progressive |
progressive vaccinia vaccinia gangrenosa | a severe or even fatal form of vaccinia that occurs mainly in persons with an immunological deficiency, characterized by progressive enlargement of the initial lesion |