heartiness
- n active strength of body or mind
- n the quality of hearty sincerity
heartland
- n the central region of a country or continent; especially a region that is important to a country or to a culture
heartleaf
- n wild ginger having persistent heart-shaped pungent leaves; West Virginia to Alabama
- n evergreen low-growing perennial having mottled green and silvery-grey heart-shaped pungent leaves; Virginia to South Carolina
heartleaf arnica
- n wildflower with heart-shaped leaves and broad yellow flower heads; of alpine areas west of the Rockies from Alaska to southern California
heartleaf manzanita
- n erect California shrub having leaves with heart-shaped lobes at the base
heartrot
- n any plant disease in which the central part of a plant rots (especially in trees)
heat exhaustion
- n a condition marked by dizziness and nausea and weakness caused by depletion of body fluids and electrolytes
heat flash
- n a flash of intense heat (as released by an atomic explosion)