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human papillomavirus

(Encyclopedia) human papillomavirus (HPV), any of a family of more than 100 viruses that cause various growths, including plantar warts and genital warts, a sexually transmitted disease. Genital…

screamer

(Encyclopedia) screamer, common name for gregarious, aquatic birds comprising three species in the family Anhimidae. Although they are related to the ducks and geese, they do not resemble them in…

Pará rubber tree

(Encyclopedia) Pará rubber treePará rubber treepäräˈ [key], large tree (Hevea brasiliensis) of the family Euphorbiaceae (spurge family), native to tropical South America and the source of the…

ginseng

(Encyclopedia) CE5 Dwarf ginseng, Panax trifolium ginsengginsengjĭnˈsĕng [key], common name for the Araliaceae, a family of tropical herbs, shrubs, and trees that are often prickly and sometimes…

goosefoot

(Encyclopedia) CE5 Lamb's-quarters Chenopodium album, a member of the goosefoot family goosefoot, common name for the genus Chenopodium, as well as for the goosefoot family, Chenopodiaceae, a…

valerian, in botany

(Encyclopedia) CE5 Valerian, Valeriana officinalis valerian, common name for some members of the Valerianaceae, a family chiefly of herbs and shrubs of temperate and colder regions of the…

cabbage

(Encyclopedia) cabbage, leafy garden vegetable of many widely dissimilar varieties, all probably descended from the wild, or sea, cabbage (Brassica oleracea) of the family Cruciferae (or Brassicaceae…

narwhal

(Encyclopedia) narwhalnarwhalnärˈwəl [key], a small arctic whale, Monodon monoceros. The males of the species, and an occasional female, bear a single, tightly spiraled tusk that measures up to 9 ft…

dentition

(Encyclopedia) dentition, kind, number, and arrangement of the teeth of humans and other animals. During the course of evolution, teeth were derived from bony body scales similar to the placoid…

Ectoprocta

(Encyclopedia) CE5 Bugula, a moss animal, representative of the phylum Ectoprocta EctoproctaEctoproctaĕkˌtəprŏkˈtə [key], phylum of sessile, colonial aquatic animals (commonly known as moss…