- An angle of less than 90°.锐角：小于九十度的角
- hypercapnia
- hypercatalectic
- hypercharge
- hypercholesterolemia
- hyperconscious
- hypercorrect
- hypercorrection
- hypercritic
- hypercritic
- hypercritical
- hypered
- hyperemia
- hyperemias
- hyperesthesia
- hypereutectic
- hyperextension
- hyperfine structure
- hypergamies
- hypergamy
- hyperglycemia
- hypergolic
- hypergonadism
- hypericin
- hypericins
- hyperinflation