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Dense vs Airhead - What's the difference?

dense | airhead |

As an adjective dense

is having relatively high density.

As a noun airhead is

a silly, foolish or unintelligent person.

dense

English

Adjective

(er)
  • Having relatively high density.
  • Compact; crowded together.
  • Thick; difficult to penetrate.
  • *, chapter=13
    • , title= The Mirror and the Lamp , passage=And Vickers launched forth into a tirade very different from his platform utterances. He spoke with extreme contempt of the dense stupidity exhibited on all occasions by the working classes. He said that if you wanted to do anything for them, you must rule them, not pamper them.}}
  • Opaque; allowing little light to pass through.
  • Obscure, or difficult to understand.
  • (mathematics, topology) Being a subset of a topological space that approximates the space well. See Wikipedia article on (dense set)s for mathematical definition.
  • Of a person, slow to comprehend; of low intelligence.

    • Synonyms

    * (having relatively high density) solid * (crowded together) compact, crowded, packed * (difficult to penetrate) thick, solid * (allowing little light to pass through) cloudy, opaque * (difficult to understand) abstruse, difficult, hard, incomprehensible, obscure, tough * (slow to comprehend) dumb, slow, stupid, thick

    Antonyms

    * (having relatively high density) * (crowded together) diffuse, few and far between (of things as opposed to one thing), scattered, sparse, rarefied * (difficult to penetrate) thin * (allowing little light to pass through) clear, diaphanous, see-through, translucent, transparent * (difficult to understand) clear, comprehensible, easy, simple, straightforward, understandable * (in mathematics) meager * (slow to comprehend) bright, canny, intelligent, quick, quick-witted, smart

    Anagrams

    * * ----

    airhead

    English

    Etymology 1

    ; having one's head filled with air instead of grey matter.

    Noun

    (en noun)
  • (pejorative) A silly, foolish or unintelligent person.
    • Synonyms
    * (silly person) bimbo, bubblehead, valley girl, dumb blonde,

    Etymology 2

    , by analogy with ''beachhead, bridgehead, railhead. ''

    Noun

    (en noun)
  • A landing area for aircraft for supplying an operation, military or other, usually temporary.
  • (military) An area of hostile territory that has been seized by paratroopers or helicopter-based troops to ensure the further landing of troops and/or materiel.
    • Related terms
    * beachhead * bridgehead * railhead