noun ge·nius \ˈjēn-yəs, ˈjē-nē-əs\

: a very smart or talented person : a person who has a level of talent or intelligence that is very rare or remarkable

: a person who is very good at doing something

: great natural ability : remarkable talent or intelligence

plural ge·nius·es or ge·nii \-nē-ˌī\

Full Definition of GENIUS

a plural genii :  an attendant spirit of a person or place
b plural usually genii :  a person who influences another for good or bad
:  a strong leaning or inclination :  penchant
a :  a peculiar, distinctive, or identifying character or spirit
b :  the associations and traditions of a place
c :  a personification or embodiment especially of a quality or condition
plural usually genii :  spirit, jinni
plural usually geniuses
a :  a single strongly marked capacity or aptitude <had a genius for getting along with boys — Mary Ross>
b :  extraordinary intellectual power especially as manifested in creative activity
c :  a person endowed with transcendent mental superiority; especially :  a person with a very high IQ

Origin of GENIUS

Latin, tutelary spirit, natural inclinations, from gignere to beget
First Known Use: 1513

Synonym Discussion of GENIUS

gift, faculty, aptitude, bent, talent, genius, knack mean a special ability for doing something. gift often implies special favor by God or nature <the gift of singing beautifully>. faculty applies to an innate or less often acquired ability for a particular accomplishment or function <a faculty for remembering names>. aptitude implies a natural liking for some activity and the likelihood of success in it <a mechanical aptitude>. bent is nearly equal to aptitude but it stresses inclination perhaps more than specific ability <a family with an artistic bent>. talent suggests a marked natural ability that needs to be developed <has enough talent to succeed>. genius suggests impressive inborn creative ability <has no great genius for poetry>. knack implies a comparatively minor but special ability making for ease and dexterity in performance <the knack of getting along>.
GENIUS Defined for Kids


noun ge·nius \ˈjēn-yəs\

Definition of GENIUS for Kids

:  a very smart or gifted person
:  great natural ability <He has artistic genius.>
:  a very clever or smart quality <The lads came … chattering all the time about Tom's stupendous plan and admiring the genius of it. — Mark Twain, Tom Sawyer>
Medical Dictionary


noun ge·nius \ˈjē-nyəs, -nē-əs\
plural ge·nius·es or ge·nii \-nē-ˌī\

Medical Definition of GENIUS

:  extraordinary intellectual power especially as manifested in creative activity
:  a person endowed with transcendent mental superiority; specifically :  a person with a very high IQ


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