(archaeology) A common set of artefacts that identifies a culture and is found disseminated widely (usually over a number of sites, but sometimes widely over one site) but restricted to a single stratum; a layer or stratum.
(physics, meteorology) The semipermanent, semicontinuous front between the deep, cold arctic air and the shallower, basically less cold polar air of northern latitudes; generally comparable to the antarctic front of the southern hemisphere.
Alternative form of El Niño [An invasion of warm water into the surface of the Pacific Ocean off the coast of Peru and Ecuador every four to seven years that causes changes in local and regional climate, associated with a positive anomaly.]
(historical, rare) Designating a zone of vegetation occurring above the heather line, which forms one of six such zones in the British Isles and is characteristic of the highest areas of Scotland.
Alternative form of terramare [(prehistory) Bronze Age lake dwellings and settlements of the Po valley in northern Italy, characterized by the presence of ammoniacal earthy deposit (black marl) in mounds.]
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