genus Ophrys
— Noun
– English
~ a hardy genus of terrestrial orchids of Europe and northern Africa and western Asia
genus Opisthocomus
— Noun
– English
~ type genus of the Opisthocomidae: hoatzins
gradable opposition
— Noun
– English
~ an opposition that is capable of being graded
genus Opuntia
— Noun
– English
~ large genus of cactuses native to America: prickly pears
garden orache
— Noun
– English
~ Asiatic plant resembling spinach often used as a potherb; naturalized in Europe and North America
genus Orbignya
— Noun
– English
~ palms of southern Mexico to northern South America: babassu palm
geostationary orbit
— Noun
– English
~ a geosynchronous orbit that is fixed with respect to a position on the Earth
geosynchronous orbit
— Noun
– English
~ a circular orbit around the Earth having a period of 24 hours
genus Orchestia
— Noun
– English
~ type genus of the family Orchestiidae
greater butterfly orchid
— Noun
– English
~ south European orchid with dark green flowers that are larger and less fragrant than Platanthera bifolia; sometimes placed in genus Habenaria
green fringed orchis
— Noun
– English
~ fringed orchid of the eastern United States having a greenish flower with the lip deeply lacerated
genus Orchis
— Noun
– English
~ type genus of the orchid family; hardy terrestrial orchids of the temperate the northern hemisphere