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scalping

(Encyclopedia)scalping, taking the scalp of an enemy. The custom, comparable to head-hunting, was formerly practiced in Europe and Asia (Herodotus describes its practice by the Scythians, for example), but it is ge...

sense

(Encyclopedia)sense, faculty by which external or internal stimuli are conveyed to the brain centers, where they are registered as sensations. Sensory reception occurs in higher animals through a process known as t...

toad

(Encyclopedia)toad, name applied to certain members of the amphibian order Anura, which also includes the frog. Although there is no clear-cut distinction between toads and frogs, the name toad commonly refers to t...

cretinism

(Encyclopedia)cretinism krēˈtənĭzˌəm [key], condition produced in infants and children due to lack of thyroid hormone. It usually results from a congenital defect (e.g., absence of the thyroid, presence of on...

hydrocortisone

(Encyclopedia)hydrocortisone hīˌdrəkôrˈtĭzōnˌ [key], another name for the steroid hormone cortisol, more especially used to refer to preparations of this hormone used medicinally. Hydrocortisone, introduced...

epithelium

(Encyclopedia)epithelium ĕpˌəthēˈlēəm [key], sheet of tissue that covers or lines the external and internal body surfaces. The epithelium is closely packed, has little intercellular material, and is lacking ...

mudskipper

(Encyclopedia)mudskipper, name for fish of several genera in the subfamily Oxudercinae of the goby family, found in coastal waters of the Indian and Pacific oceans and on the Atlantic coast of Africa. The typically...

parchment

(Encyclopedia)parchment, untanned skins of animals, especially of the sheep, calf, and goat, prepared for use as a writing material. The name is a corruption of Pergamum, the ancient city of Asia Minor where prepar...

leatherback

(Encyclopedia)leatherback, marine turtle, Dermochelys coriacea, found in tropical, subtropical, and temperate waters around the world. The largest of all turtles, it may reach a length of 71⁄2 ft (230 cm) and wei...

Solomon's-seal

(Encyclopedia)Solomon's-seal, any plant of the genus Polygonatum, north-temperate perennial herbs of the family Liliaceae (lily family). The hairy Solomon's-seal (P. pubescens) and the smooth Solomon's-seal (P. bif...