- hyperacute rejection，HAR
- hyperadmissibility
- hyperalgebra
- hyperalgebra construction
- hyperalgebraic
- hyperalgebraic manifold
- hyperalgebra of an affine group scheme
- hyperalgesia
- hyperammonemia
- hyperanalytic
- hyperanalytic manifold
- hyperareal
- hyperareal metric
- hyper-arid area
- hyperarithmetic
- hyperarithmetical
- hyperarithmetic hierarchy
- hyperarithmetic reduction
- hyperarithmetic relation
- hyperarithmetic set
- hyperasymptotic
- hyperasymptotic series
- hyperatom
- hyperball
- hyperballistics