1. the permanent, dedicated, and completely faithful nucleus of a group or movement, as of a political party.
2. an unyielding or intransigent element in a social or organizational structure, as that part of a group consisting of longtime adherents or those resistant to change.
3. those whose condition seems to be without hope of remedy or change.
Pronunciation: (härd'kôr', -kōr'), [key]
1. unswervingly committed; uncompromising; dedicated: a hard-core segregationist.
2. pruriently explicit; graphically depicted: hard-core pornography.
3. being so without apparent change or remedy; chronic: hard-core inflation; hard-core unemployment. Cf. soft-core.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.