hemipteron
- n insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis
hemipterous insect
- n insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis
hemiramphidae
- n halfbeaks; marine and freshwater fishes closely related to the flying fishes but not able to glide
hemisphere
- n half of the terrestrial globe
- n half of a sphere
- n either half of the cerebrum
hemitripterus americanus
- n large sculpin of western Atlantic; inflates itself when caught
hemizygos vein
- n a continuation of the left ascending lumbar vein; crosses the midline at the 8th vertebra and empties into the azygos vein
hemizygous vein
- n a continuation of the left ascending lumbar vein; crosses the midline at the 8th vertebra and empties into the azygos vein
hemlock
- n poisonous drug derived from an Eurasian plant of the genus Conium
Socrates refused to flee and died by drinking hemlock - n large branching biennial herb native to Eurasia and Africa and adventive in North America having large fernlike leaves and white flowers; usually found in damp habitats; all parts extremely poisonous
- n soft coarse splintery wood of a hemlock tree especially the western hemlock
- n an evergreen tree