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biennial

(Encyclopedia)biennial, plant requiring two years to complete its life cycle, as distinguished from an annual or a perennial. In the first year a biennial usually produces a rosette of leaves (e.g., the cabbage) an...

elecampane

(Encyclopedia)elecampane ĕlˌəkămpānˈ [key], hardy Old World herb, Inula helenium, of the family Asteraceae (aster family), naturalized in America and sometimes cultivated in gardens. It has showy yellow-rayed...

Allah

(Encyclopedia)Allah ălˈə, äˈlə [key], [Arab.,=the God]. Derived from an old Semitic root refering to the Divine and used in the Canaanite El, the Mesopotamian ilu, and the biblical Elohim, the word Allah is u...

horse-radish

(Encyclopedia)horse-radish, perennial herb (Armoracia rusticana, but sometimes classified in other genera) of the family Cruciferae (or Brassicaceae; mustard family), native to central and S Europe (where it has lo...

lawn

(Encyclopedia)lawn, grass turf or greensward cultivated in private yard or public park. A good lawn, or green, has both beauty and usefulness; its maintenance for golf, tennis, baseball, and other sports is a costl...

poison hemlock

(Encyclopedia)poison hemlock, lethally poisonous herbaceous plant (Conium maculatum) of the family Umbelliferae (parsley family). It has rank, finely divided foliage, flat-topped clusters of small white flowers, an...

bugbane

(Encyclopedia)bugbane, any plant of the genus Cimicifuga, tall north-temperate perennials of the family Ranunculaceae (buttercup family). The white spirelike bloom has a rank odor that attracts flies, which pollina...

trigonometry

(Encyclopedia)trigonometry [Gr.,=measurement of triangles], a specialized area of geometry concerned with the properties of and relations among the parts of a triangle. Spherical trigonometry is concerned with the ...

chicory

(Encyclopedia)chicory sŭkˈərē [key], Mediterannean herb (Cichorium intybus) of the family Asteraceae (aster family), naturalized in North America, where the tall stalks of usually blue flowers are common along ...

horizon

(Encyclopedia)horizon, in astronomy, roughly circular line bounding an observer's view of the surface of the earth where the sky and earth seem to meet. This is the visible horizon. At sea the visible horizon is a ...