genus Rauvolfia
— Noun
– English
～ pantropical genus of somewhat poisonous shrubs and small trees
genus Rauwolfia
— Noun
– English
～ pantropical genus of somewhat poisonous shrubs and small trees
genus Ravenala
— Noun
– English
～ woody tropical plants with tall trunks; sometimes placed in family Musaceae
Guibert of Ravenna
— Noun
– English
～ Italian antipope from 1080 to 1100 who was installed as pope by the Holy Roman Emperor Henry IV who consistently opposed efforts at papal reform (died in 1100)
gamma ray
— Noun
– English
～ electromagnetic radiation emitted during radioactive decay and having an extremely short wavelength
gas-cooled reactor
— Noun
– English
～ a nuclear reactor using gas as a coolant
Grim Reaper
— Noun
– English
～ Death personified as an old man or a skeleton with a scythe
graphical record
— Noun
– English
～ a visual representation of the relations between certain quantities, represented as points, plotted with reference to a set of axes
graphical recording
— Noun
– English
～ a visual representation of the relations between certain quantities, represented as points, plotted with reference to a set of axes
genus Recurvirostra
— Noun
– English
～ type genus of the Recurvirostridae: avocets
giant red paintbrush
— Noun
– English
～ wildflower of western North America having ragged clusters of crimson or scarlet flowers
giant reed
— Noun
– English
～ large rhizomatous perennial grasses found by riversides and in ditches having jointed stems and large grey-white feathery panicles
Great Barrier Reef
— Noun
– English
～ the largest coral reef in the world; in the Coral Sea off the northeastern coast of Australia
gag reflex
— Noun
– English
～ normal reflex consisting of retching; may be produced by touching the soft palate in the back of the mouth