1. (biology) a hypothesis of directed evolution (as opposed to natural selection of random variations)

Encyclopedia: Orthogenesis

• greenish-grey
• greenish-white
• greenishness
• Greenland
• Greenland caribou
• Greenland Sea
• Greenland spar
• Greenland whale
• greenlet
• greenling
• greenly
• greenmail
• greenmarket
• greenness
• greenockite
• Greenpeace
• greenroom
• greens
• greensand
• Greensboro
• greenshank
• greensick
• greensickness
• greenside
• greenskeeper