hard

hard

adj \ˈhärd\

Definition of HARD

1

: not easily penetrated : not easily yielding to pressure

2

a of liquor : strongly alcoholic; specifically : having an alcoholic content of more than 22.5 percent b : characterized by the presence of salts (as of calcium or magnesium) that prevent lathering with soap <hard water>

3

: of or relating to radiation of relatively high penetrating power <hard X-rays>

4

a : physically fit <in good hard condition> b : resistant to stress (as disease)

5

: being at once addictive and gravely detrimental to health <such hard drugs as heroin>

6

: resistant to biodegradation <hard detergents> <hard pesticides like DDT>

—hard·ness noun