| declension | (noun) a class of nouns or pronouns or adjectives in Indo-European languages having the same (or very similar) inflectional forms | - |
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| (noun) a downward slope or bend | Synonyms: declination, decline, declivity, descent, downslope, fall |
| (noun) process of changing to an inferior state | Synonyms: decline in quality, deterioration, worsening |
| (noun) the inflection of nouns and pronouns and adjectives in Indo-European languages | - |
| lens | (noun) a transparent optical device used to converge or diverge transmitted light and to form images | Synonyms: lens system, lense |
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| (noun) electronic equipment that uses a magnetic or electric field in order to focus a beam of electrons | Synonyms: electron lens |
| (noun) biconvex transparent body situated behind the iris in the eye; its role (along with the cornea) is to focus light on the retina | Synonyms: crystalline lens, lens of the eye |
| (noun) (metaphor) a channel through which something can be seen or understood | - |
| lense | (noun) a transparent optical device used to converge or diverge transmitted light and to form images | Synonyms: lens, lens system |
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| lensman | (noun) someone who takes photographs professionally | Synonyms: photographer |
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