hemiacetal
- n an organic compound usually formed as an intermediate product in the preparation of acetals from aldehydes or ketones
hemianopia
- n blindness in one half of the visual field of one or both eyes
hemianopsia
- n blindness in one half of the visual field of one or both eyes
hemiascomycetes
- n class of fungi in which no ascocarps are formed: yeasts and some plant parasites
hemicrania
- n a severe recurring vascular headache; occurs more frequently in women than men
hemidemisemiquaver
- n a musical note having the time value of a sixty-fourth of a whole note