definition of
dense

[1] #1 dense s. [heavy, impenetrable] permitting little if any light to pass through because of denseness of matter; "dense smoke"; "heavy fog"; "impenetrable gloom". wn

[2] #2 dense s. having high relative density or specific gravity; "dense as lead". wn

[3] #3 dense s. [dim, dull, dumb, obtuse, slow] slow to learn or understand; lacking intellectual acuity; "so dense he never understands anything I say to him"; "never met anyone quite so dim"; "although dull at classical learning, at mathematics he was uncommonly quick"- Thackeray; "dumb officials mak. wn