Quick Quiz: Nouns Score: Change category, Flip order Reset Correct! Noun: asterid dicot genus Your choice? genus of more or less advanced dicotyledonous herbs and some trees and shrubs (ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea North American astilbe with panicles of creamy white flowers the time for the earth to make one revolution around the sun, measured between two vernal equinoxes