Life expectancyLife expectancy is a statistical measure of the estimate of the span of a life. The most commonly used measure is life expectancy at birth (LEB), which can be defined in two ways. Cohort LEB is the mean length of life of a birth cohort (in this case, all individuals born in a given year) and can be computed only for cohorts born so long ago that all their members have died. Period LEB is the mean length of life of a hypothetical cohort assumed to be exposed, from birth through death, to the mortality rates observed at a given year.
FlintFlint, occasionally flintstone, is a sedimentary cryptocrystalline form of the mineral quartz, categorized as the variety of chert that occurs in chalk or marly limestone. Flint was widely used historically to make stone tools and start fires. Flint occurs chiefly as nodules and masses in sedimentary rocks, such as chalks and limestones. Inside the nodule, flint is usually dark grey or black, green, white, or brown in colour, and has a glassy or waxy appearance.
CairnA cairn is a man-made pile (or stack) of stones raised for a purpose, usually as a marker or as a burial mound. The word cairn comes from the càrn ˈkhaːrɣn̪ɣ (plural càirn ˈkhaːrɣɲ). Cairns have been and are used for a broad variety of purposes. In prehistory, they were raised as markers, as memorials and as burial monuments (some of which contained chambers). In the modern era, cairns are often raised as landmarks, especially to mark the summits of mountains. Cairns are also used as trail markers.
BeadA bead is a small, decorative object that is formed in a variety of shapes and sizes of a material such as stone, bone, shell, glass, plastic, wood, or pearl and with a small hole for threading or stringing. Beads range in size from under to over in diameter. Beads represent some of the earliest forms of jewellery, with a pair of beads made from Nassarius sea snail shells dating to approximately 100,000 years ago thought to be the earliest known example. Beadwork is the art or craft of making things with beads.
EpipalaeolithicIn archaeology, the Epipalaeolithic or Epipaleolithic (sometimes Epi-paleolithic etc.) is a period occurring between the Upper Paleolithic and Neolithic during the Stone Age. Mesolithic also falls between these two periods, and the two are sometimes confused or used as synonyms. More often, they are distinct, referring to approximately the same period of time in different geographic areas. Epipaleolithic always includes this period in the Levant and, often, the rest of the Near East.
SedentismIn cultural anthropology, sedentism (sometimes called sedentariness; compare sedentarism) is the practice of living in one place for a long time. As of , the large majority of people belong to sedentary cultures. In evolutionary anthropology and archaeology, sedentism takes on a slightly different sub-meaning, often applying to the transition from nomadic society to a lifestyle that involves remaining in one place permanently. Essentially, sedentism means living in groups permanently in one place.
EmmerEmmer wheat or hulled wheat is a type of awned wheat. Emmer is a tetraploid (4n = 4x = 28 chromosomes). The domesticated types are Triticum turgidum subsp. dicoccum and T. t. conv. durum. The wild plant is called T. t. subsp. dicoccoides. The principal difference between the wild and the domestic forms is that the ripened seed head of the wild plant shatters and scatters the seed onto the ground, while in the domesticated emmer, the seed head remains intact, thus making it easier for humans to harvest the grain.
DaggerA dagger is a fighting knife with a very sharp point and usually two sharp edges, typically designed or capable of being used as a thrusting or stabbing weapon. Daggers have been used throughout human history for close combat confrontations, and many cultures have used adorned daggers in ritual and ceremonial contexts. The distinctive shape and historic usage of the dagger have made it iconic and symbolic. A dagger in the modern sense is a weapon designed for close-proximity combat or self-defense; due to its use in historic weapon assemblages, it has associations with assassination and murders.
Linear Pottery cultureThe Linear Pottery culture (LBK) is a major archaeological horizon of the European Neolithic period, flourishing 5500–4500 BC. Derived from the German Linearbandkeramik, it is also known as the Linear Band Ware, Linear Ware, Linear Ceramics or Incised Ware culture, falling within the Danubian I culture of V. Gordon Childe. Most cultural evidence has been found on the middle Danube, the upper and middle Elbe, and the upper and middle Rhine. It represents a major event in the initial spread of agriculture in Europe.
Ubaid periodThe Ubaid period (c. 5500–3700 BC) is a prehistoric period of Mesopotamia. The name derives from Tell al-'Ubaid where the earliest large excavation of Ubaid period material was conducted initially in 1919 by Henry Hall and later by Leonard Woolley. In South Mesopotamia the period is the earliest known period on the alluvial plain although it is likely earlier periods exist obscured under the alluvium. In the south it has a very long duration between about 5500 and 3800 BC when it is replaced by the Uruk period.
